Macropodidae, Family
Macropus fuliginosus
Macropus giganteus
Macropus rufus
Macroscelidea, Order
Mallee Kangaroo
Mammal
Mammalia, Class
Manatees and Dugongs
Maneating Crocodile
Margin-tailed Otter
Marmota vancouverensis
Marsh Crocodile
Marsupialia, Order
Marsupial Moles
Marsupials
Masai Giraffe
Matschie's Tree Kangaroo
Megachasma pelagios
Megachasmidae, Family
Megamouth Shark
Megaptera novaeanglia(e)
Melon-Headed Whale
Mexican Crocodile
Microbiotheria, Order
Mississippi Alligator
Mola mola
Molidae, Family
Mollusca, Phylum
Mollusks
Monotremata, Order
Monotreme
Morelet's Crocodile
Mugger Crocodile
Mustelidae, Family