Mikey is like that too. He loves one of my cats, Eerie, but he likes her when he wants to like her. Chloe, my other kitty never took to him, she isn't mean to him, she just doesn't want to be friends. Well, if she comes around Mikey goes off on her. He seems to hate all other dogs in general. So funny, I dreamed Mikey was almost as big as a lab last night but real skinny and I had gotten another dog and Mikey kept trying to fight him and I was so mad!