Actually no. His bowls are ceramic. His previous owner used plastic though. I've had him for just over a year and he's always done this. So that could have something to do with it. I guess I took it more as a pschycological thing. Like when dogs eat grass when they have an upset stomach. They eat it and vomit to make themselves feel better. I was thinking licking plastic could give him the feeling of eating. Who knows? I've also had a cat that talked to walls every morning at feeding time. Maybe I just have crazy cats. Lol

