Only one I can think of is a Mercat or maybe it's meercat, can't remember but seen it on commercial on the discovery channel. Hope this helps
A moose...
The MongooseMongoose
moa
mouton moustique
malamute
Monkey? Meerkat?
"Mocha" is a type of coffee that starts with the letter m.
food?
mosquito
a type of horse that stars with M is a Morgan, Mustang, and Marwarri
metatraian sea
Roadrunner, rooster, robin, raven, red tailed hawk