Theria
- Eutheria
- Metatheria
- Atlasodon
- Barbereniidae
- Brandoniidae
- Casamiqueliidae
- Chunnelodon
- Dakotadens
- Donodontidae
- Dryolestidae
- Henkelotheriidae
- Holoclemensiidae
- Domestic cattle Bos taurus
Cattle are raised as livestock across much of the world. They eat vegetation and bring swallowed food back to the mouth to chew again.
- Gray wolf Canis lupus
A pack-living canid of Eurasia and North America. It uses habitats ranging from forests and tundra to grasslands.
- Lion Panthera leo
A lion is a large cat that lives in groups centered on females and their young.
- Common dolphin Delphinus delphis
A dolphin with contrasting patches along its sides that form an hourglass-like pattern.
- Domestic donkey Equus asinus
A domestic donkey with large ears. It is a grazing animal that forms strong bonds with companions.
- Fin whale Balaenoptera physalus
A whale with a streamlined body and a dorsal fin set well back. The lower jaw has different colors on each side.
- Domestic goat Capra hircus
A goat raised by people for milk, fiber and meat. It prefers the company of other goats.
- Tiger Panthera tigris
A tiger is a large striped cat. It usually lives alone and hunts by stalking and ambushing prey.
- Polar bear Ursus maritimus
A bear that hunts on Arctic sea ice. It feeds mainly on seals and moves between ice and land.
- Killer whale Orcinus orca
A member of the dolphin family with a black back, white belly and white patches near the eyes.
- Eurasian otter Lutra lutra
An otter of waterways in Eurasia and northern Africa. It catches fish and other prey in water and rests in sheltered places on land.
- Domestic sheep Ovis aries
A domestic sheep spread around the world by people. It tends to move together with other sheep.
