diff --git a/mods/biology.js b/mods/biology.js
index bb84b6a2..b8faf726 100644
--- a/mods/biology.js
+++ b/mods/biology.js
@@ -56,7 +56,7 @@ elements.flesh = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -199,7 +199,7 @@ elements.epidermis = {
             pixel.temp += 1;
         }
         doDefaults(pixel);
-        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -328,7 +328,7 @@ elements.dermis = {
             }
         }
         doDefaults(pixel);
-        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -461,7 +461,7 @@ elements.loose_hair = {
 },
 
 elements.hair_end = {
-    color: "#9D4C3B",
+    color: "#754a41",
 	category: "structural",
     behavior: behaviors.WALL,
     tick: function(pixel) {
@@ -528,7 +528,7 @@ elements.hair_end = {
 }
 
 elements.attached_hair = {
-    color: "#9D4C3B",
+    color: "#754a41",
 	category: "structural",
     behavior: behaviors.WALL,
     tick: function(pixel) {
@@ -693,7 +693,7 @@ elements.hairy_skin = {
             pixel.temp += 1;
         }
         doDefaults(pixel);
-        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -827,7 +827,7 @@ elements.hair_dermis = {
             }
         }
         doDefaults(pixel);
-        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -1085,7 +1085,7 @@ elements.scale_dermis = {
             }
         }
         doDefaults(pixel);
-        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -1219,7 +1219,7 @@ elements.bug_dermis = {
             }
         }
         doDefaults(pixel);
-        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -1354,7 +1354,7 @@ elements.amphib_dermis = {
             }
         }
         doDefaults(pixel);
-        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -1477,7 +1477,7 @@ elements.acidic_flesh = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -1599,7 +1599,7 @@ elements.slimey_flesh = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -1970,7 +1970,7 @@ elements.heart = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.975 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.975 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -2111,7 +2111,7 @@ elements.kidney = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.975 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.975 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -2244,7 +2244,7 @@ elements.liver = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.975 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.975 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -2733,7 +2733,7 @@ elements.eye = {
         doHeat(pixel);
 		doBurning(pixel);
 		doElectricity(pixel);
-        if ((Math.random() > 0.895 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.895 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -2926,7 +2926,7 @@ elements.olfactory_bulb = {
         doHeat(pixel);
 		doBurning(pixel);
 		doElectricity(pixel);
-        if ((Math.random() > 0.895 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.895 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -3131,7 +3131,7 @@ elements.brain = {
         doHeat(pixel);
 		doBurning(pixel);
 		doElectricity(pixel);
-        if ((Math.random() > 0.85 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.85 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -3412,7 +3412,7 @@ elements.eye_nerve = {
     },
     tick: function(pixel) {
         doDefaults(pixel);
-        if ((Math.random() > 0.895 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.895 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -3536,7 +3536,7 @@ elements.bulb_nerve = {
     },
     tick: function(pixel) {
         doDefaults(pixel);
-        if ((Math.random() > 0.895 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.895 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -3661,7 +3661,7 @@ elements.nerve = {
     },
     tick: function(pixel) {
         doDefaults(pixel);
-        if ((Math.random() > 0.895 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.895 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -3788,7 +3788,7 @@ elements.throat_lining = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -3911,7 +3911,7 @@ elements.intestines = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -3935,7 +3935,12 @@ elements.intestines = {
 		if (!isEmpty(pixel.x, pixel.y-1, true)) {
             var hitPixel = pixelMap[pixel.x][pixel.y-1]
             if (elements[hitPixel.element].id === elements.digested_material.id && Math.random() > 0.99) {
-                changePixel(hitPixel,"poop");
+                if (Math.random() > 0.5) {
+            		changePixel(hitPixel,"poop"); 
+	        }
+		else if (Math.random() > 0.5) {
+            		changePixel(hitPixel,"stench"); 
+	        }
                 pixel.nutrition += hitPixel.nutrition;
                 hitPixel.nutrition = 0;
                 pixel.speed += hitPixel.speed;
@@ -3966,7 +3971,12 @@ elements.intestines = {
         if (!isEmpty(pixel.x, pixel.y+1, true)) {
             var hitPixel = pixelMap[pixel.x][pixel.y+1]
             if (elements[hitPixel.element].id === elements.digested_material.id && Math.random() > 0.99) {
-                changePixel(hitPixel,"poop");
+                if (Math.random() > 0.5) {
+            		changePixel(hitPixel,"poop"); 
+	        }
+		else if (Math.random() > 0.5) {
+            		changePixel(hitPixel,"stench"); 
+	        }
                 pixel.nutrition += hitPixel.nutrition;
                 hitPixel.nutrition = 0;
                 pixel.speed += hitPixel.speed;
@@ -3997,7 +4007,12 @@ elements.intestines = {
         if (!isEmpty(pixel.x-1, pixel.y, true)) {
             var hitPixel = pixelMap[pixel.x-1][pixel.y]
             if (elements[hitPixel.element].id === elements.digested_material.id && Math.random() > 0.99) {
-                changePixel(hitPixel,"poop");
+                if (Math.random() > 0.5) {
+            		changePixel(hitPixel,"poop"); 
+	        }
+		else if (Math.random() > 0.5) {
+            		changePixel(hitPixel,"stench"); 
+	        }
                 pixel.nutrition += hitPixel.nutrition;
                 hitPixel.nutrition = 0;
                 pixel.speed += hitPixel.speed;
@@ -4026,7 +4041,12 @@ elements.intestines = {
         if (!isEmpty(pixel.x+1, pixel.y, true)) {
             var hitPixel = pixelMap[pixel.x+1][pixel.y]
             if (elements[hitPixel.element].id === elements.digested_material.id && Math.random() > 0.99) {
-                changePixel(hitPixel,"poop");
+                if (Math.random() > 0.5) {
+            		changePixel(hitPixel,"poop"); 
+	        }
+		else if (Math.random() > 0.5) {
+            		changePixel(hitPixel,"stench"); 
+	        }
                 pixel.nutrition += hitPixel.nutrition;
                 hitPixel.nutrition = 0;
                 pixel.speed += hitPixel.speed;
@@ -4088,7 +4108,7 @@ elements.appendix = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
             if (Math.random() > 0.999 && (pixel.nutrition < 750 || pixel.oxygen < 500)) {
@@ -4258,7 +4278,7 @@ elements.simple_lung = {
                 if (Math.random() < 0.01) { pixel.oxygen += 100 }
                 break
             } } 
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -4405,7 +4425,7 @@ elements.lungs = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -4948,7 +4968,7 @@ elements.gills = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -5127,7 +5147,7 @@ elements.stomach_lining = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -5254,7 +5274,7 @@ elements.decomposer_stomach = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -5381,7 +5401,7 @@ elements.herbi_stomach = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -5508,7 +5528,7 @@ elements.carni_stomach = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -5635,7 +5655,7 @@ elements.explosive_stomach = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -5762,7 +5782,7 @@ elements.stomach_valve = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -5889,7 +5909,7 @@ elements.sphincter = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.9 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -6999,7 +7019,7 @@ elements.real_bone = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.99 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.99 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -7124,7 +7144,7 @@ elements.real_bone_marrow = {
             }
         }
         doDefaults(pixel);
-        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }
@@ -7478,7 +7498,7 @@ elements.brain_jar_juice = {
     tempHigh: 102,
     stateHigh: ["steam","steam","dna","dna","stench","salt",],
     tempLow: -5,
-    category: "structural",
+    category: "circulation",
     reactions: {
         "dust": { elem1: "dirty_water", elem2: null },
         "ash": { elem1: "dirty_water", elem2: null },
@@ -7582,7 +7602,7 @@ elements.tract = {
         return "Ntr:"+pixel.nutrition+" O2:"+pixel.oxygen
     },
     tick: function(pixel) {
-        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 40 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < 0 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
+        if ((Math.random() > 0.92 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.burning === true && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp > 43 && pixel.nutrition > 0 && pixel.oxygen > 0) || (pixel.temp < -10 && pixel.nutrition > 0 && pixel.oxygen > 0)) {
             pixel.nutrition--
             pixel.oxygen -= 2
         }