The large ox because it would gore the panther to death.
The medium ox would win because it would gore the panther to death like a large ox would.
The panther will not win since the gorilla will give a strong blow to the panther and the large ox will knock down the panther with its head. This leaves the large ox and the gorilla together in fighting. The large ox will win if it knocked the gorilla down with its head or at least gore it to death.
The panther would win because it would jump on the small ox's back and pierce its teeth into it.
The gorilla is most likely the winner. It is likely that the small ox will not win because the panther can kill the small ox by biting or clawing it and the gorilla will throw a stone on the small ox's head. The gorilla later will beat the panther by a snap on the throat or throwing a stone.
The large ox because it would trample the gorilla to death.
The black bear would possibly win because it would bite the ox's face. The large ox. It would gore the black bear with its horns.
The polar bear. It would bite the large ox's face.
The grizzly bear. It will bite the large ox's face.
The gorilla would win because it would grab the small ox's head and snap its neck.
The medium ox would win because it would knock the gorilla out with its hooves.
The ox would win if it is healthy and strong with a gore of the horns on the chest. But is likely that it would get pretty injured.
The crocodile could win, but would get badly injured by the ox and the cattlebeast's body.