If you read Housepets, you would know that Peanut has a comic of his own, in which Spot (superdog) was once targeted by a nefarious villain in a pink dress. This is fan-art of said villain. Because he is adorable.

Character owned by Peanut Butter Sandwich who is owned by Mr & Mrs Sandwich who are all collectively owned by  rickgriffin who is presumably owned by himself.