An early mammal from about 200 million years ago. MUSK OX Musk oxen are large, hairy mammals that live in the far north. Naked mole-rats are small, almost hairless rodents who live in underground colonies in Africa. The Northern Elephant Seal is a huge seal that lives in the northern Pacific Ocean. The Northern Fur Seal is a marine mammal that lives in the northern Pacific Ocean.
Ocelots are wild cats from the Americas.
The Okapi is a nocturnal, giraffe-like mammal from African rainforests. ORCA Orcas are killer whales. ORYX Oryx are long-horned antelopes from dry areas in Africa and Asia. The otter is a playful aquatic mammal. The pangolin is an insect-eating mammal that has protective scales on its body.