I'd rather fight and die in their army as at least they would see some use in me other than entertainment. If serving in the army and being a pet both involved some admission of inferiority, the army would at least not be as bad in terms of that. Really, when you think about it, at least in terms of race on Earth, the first thing that was really integrated in terms of whites and blacks in America was the army and even before it was integrated, at war the guy next to you wasn't inferior at all.
Oh, and in terms of how humanity treats their pets, if aliens followed suit, you would have your nuts cut off and you wouldn't be able to interact often with other humans.