Manatee.
whale
Hippopotamus is a semi-aquatic mammal. It is a land mammal that inhabits rivers, lakes and swamps.
Ostrich
by holly morton (that is my name) lol
Ukrainian Grey Cattle and the dog breed Ultimate Mastiff are mammals. They begin with the letter U.
Zebra
The ecology pioneer whose last name begins with Mu is John Muir.
Boar. Bison. Buffalo. Badger. Baboon.
crane
penguin pelican
hagiai
cannonball adderly