Deer mink???
You mean a muntjac? The teeth and horns match, although Yamato wouldn't look close enough to be a Muntjac Mink with those ears. But it's One Piece, the series cares less about animal accuracy.
I won't deny that Oda's gotten too lazy with Zoan hybrid designs lately. That's why I need to see the coloring to see if it's not just some prettier Mink design-wise. There's enough beastly design aspects at least to prove that it is a mythological creature than some random animal. As if he can't stop hiding Devil Fruit names like he's done with Kaidou for so long.