A moose.
Probably the moose.
A bull will win because mooses are weak very weak
a mountain lion of coarse
I should hope the moose.. because it would be funnier to see a moose kill a rhino than the other way around.. that would just be sad.
Otter vs Moose? Big mismatch the Moose.
The hippo would win because it is much stronger and more powerful. The moose's hooves or antlers (if it is a bull moose) would not do anything due to the thick hide of the hippo.
A cow moose on the rut, especially one that is defending the young from an enemy, is quite dangerous and powerful enough to injure a pack of wolves. Two wolves are good at killing animals that are bigger than themselves, but the cow moose has those hooves and a strong head that could kill the two wolves. The hooves would stomp or trample the two wolves to death if the two wolves do not escape fast. Even if one wolf can distract the moose on the front, and the other can go on the back to rip out the hamstrings, a cow moose would charge at them and knock them to death. In the fight, the cow moose would win.
The moose, especially if the moose is a bull moose on the rut, would knock out the two men easily if the two men do not run away fast. Moose are standing quite taller than a human and can even send a grizzly bear flying. Even if the two men had knives or clubs, the moose (if the moose was a bull moose) would gore the two men with its large antlers to death and tear them out.
Moose. Everybody would think that the gorilla would win, but those sort of people have never seen or heard of stories of how moose can fight and defend themselves. A cow that is protecting her calf or calves or a bull on the rut is far more dangerous to a gorilla than most people think. Moose have their long legs and sharp hooves that they can use to strike out and rip the gorilla to shreds, not to mention those huge antlers that can be used to flip the gorilla around like a rag doll. A bull on the rut will charge at and battle with anything, and win most of the times, even if it's against a gorilla!!
Werewolf
Normally a deer would chose to run away than to fight, unlike a moose. A buck can be very powerful and dangerous enough to wound five men. So it's possible that, in a fight, the deer may win, but not as a means to kill all men, but enough so that it can fight them off to get away to freedom.
Sonic would win the fight, but sora would put in one hell of a fight.