PJ snapped at me today after I tried to get a piece of trash out of his mouth that he found on the ground during a walk today. I adopted him about a month ago and didn't show aggression until now. I can take his food away from him or touch him while he is eating. I really think it is the steroids. I had to put him on steroids because of his extreme allergies. He would scratch for 23 hours out of the day. Now he doesn't scratch at all. I'm weaning him off the steroids. Has anyone noticed aggressive behavior while on steroids?