[Riku knows he's different from the other wolves. They smell things he can't. Their paws are different. They have more hair and sharper, more useful, teeth. But he can imitate many noises, and his paws can sometimes pick things up. He can also rear up higher. But being a wolf is all he's known. Looks or not, it will always be part of who he is. They took him in, despite looking and smelling different.

That doesn't mean that learning this trick won't be handy. He could probably be quieter this way with fewer limbs, and appear larger when threatened by another animal.]