A cow. Seriously. The laziest animal on earth. And I'd taste good Or possibly a penguin, just for the awesomeness.
A very classy Himalayan purebred cat. Those kittens are adorable and we bred himalayans before, they're so cute. Walking puffballs. It'd be nice to be a cat (purebred) as those animals are treated like kings and queens by those caring animal lovers. Sleeping all day, must be great.
I'd return as Jesus, that is, you know, if there is a god. Hes not human, so the rule in the first post doesn't apply, and id have all of his powers and control here on earth =)