Hahahaha. I have a black pastel who is just nasty too. Every time I open his tub, he puffs up and hisses as loud as he can. He was a rescue I took in a while back that I recently discovered to be suffering from RI, so I took him to the vet on Wednesday and I'm hoping that he gets nicer once the RI is gone. But I do know what you mean. The times he HASN'T puffed up and looked like he wants to kill me, I have to make sure he's still alive...