True. I was just thinking he learned where the food dish is and the heat lamp inside, so teaching him where heat and food is outside shouldn't be that hard. Boy was I wrong.Its not about self-preservation. Its that for millions of year they evolved in a place where the temps are never wrong for them. When we move them to a foreign land with a different climate, they simply don't possess the mental mechanisms that say: "Its too cold here. I should move to that wooden box with the heaters inside...". If there was a cool spell in the wild, they'd park under a bush and simply wait for it to warm up later that day or the next.