My dog thinks she's a cat: she purrs, and she was known for pinning down our previous feline and giving her a tongue bath. And absolutely no one in the house may give or receive attention unless she's getting some too.
The cat's still a kitten and just plain nuts - every morning as I head to the kitchen she yells at me and runs away - to a card table where she's semi-trapped and more within pre-coffee reach. This is one of her more sane habits.
She doesn't think she's a prisoner though - more like an emperor with slightly stupid subjects to cater to her every whim.