there seems to be a lot of tension in this discussion. so i'm just going to pop my opinion out there x)
so, i'm only 17 and still at school, so i live with my parents and my brother. they all eat meat and animal products. as do my 2 dogs, casper and dumbledore.
my dogs eat gross things like chicken necks and random bones from other poor animals, and i refuse to give it to them myself.
as a result, my other family members tend to feed the dogs because i can't handle it.
i love them to bits, don't get me wrong, but i can't stand to touch the meat.
i think it would be difficult for people to prepare vegan diets for pets, especially cats (considering they are natural predators) and so, i don't have any anger toward people who do feed their animals meat.
however, if i was out of home, in my own place i would be tempted to research a vegan diet for dogs, though i'm not sure if it would be suitable.
if not, i would buy a rabbit.