So like chicken, it is merely a higher-order vegetable?
So that makes carnivores third—order vegetables?
If you get a gnu-hoof onto your head, while hunting, you can actually fall down the veggie ladder- so from third order vegetable, you can return to beeing a vegetable alltogether.
I grew up around sheep and I think it's fair to say that a sheep is pretty much a wooly turnip in both taste and intellect.
If the person who eats only plants is called “vegan”, then it stands to reason that a sheep that eats only plants could also be called “vegan”.