Mine also calms down after a couple minutes. What I meant was that since he's red, and when someone's mad they're red, it would look like he's angry because he's hissing and b/c he's red. Anyway, are you sure that he's 6-7 inches? He looks like he's around the same size as my Hogger and mine's 11" long. Try to measure him when he isn't in an "S" shape.