Have to give the nod to Bianca. Of course an anthropomorphic creature is going to have the advantage since it can utilize weapons, and other utilities with the hands. Whereas a feral wolf basically only has teeth, claws and agility to it's advantage. An anthro has all those plus more. But, I've never watched Sheep and Wolves, soooo..

Here is the link for for Bianca's fan club link

Probably bianca, I mean lets be real Kate can do some acrobats and shit but I wouldn't exactly call her a fighter.

Eh, Diane Foxington has them both beat.