Catgirls are better. But Wolves rock as an animal.
Just like Catgirls are more elogant, so are Cats. And while it's good for a humaniode catgirl, as an animal, it makes them rather fragile, and while there is a rather sexy something about being feminane. While a wolf can kick some ass.
CatGirls > WolfGirls.
And I choose not between Cats and Wolves. 'Cause that's a much harder decision.