Lol giant. Ammy's actually not a giant wolf at all - you're probably thinking out resident Moro. Ammy's roughly the size of your standard wolf, perhaps even a few inches smaller in fact. In the eyes of your average Joe, she literally is just a plain, normal, everyday white wolf.

Hm, again this is hard to decide, and I'll leave the ultimate decision to you yourself, but if Kazooie's open to the idea of gods existing and stuff, I think she'd probably see very faint red patches on Ammy's fur.