Mammals are members of a class of air-breathing vertebrate animals characterised by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young. Most mammals also possess sweat glands and specialised teeth, and the largest group of mammals, the placentals, have a placenta which feeds the offspring during gestation.
Hippopotamuses are two species of herbivorous, chiefly semi-aquatic mammals belonging to the family Hippopotamida
The impala, Aepyceros melampus is a fast-running antelope of grasslands and open woodlands in central and southern Africa
The jaguar (Panthera onca) is the largest member of the cat family, Felidae, and one of four "big cats" in the genus Panthera
Lions((Panthera leo), are among the great or roaring cats of the family Felidae
The wombat is a burrowing, herbivorous, marsupial mammal in the family Phascolomidae