Mammal

Mammals (哺乳類), meaning breast in Latin are group of organisms included in the mammaliaformes class. It is characterized by many organisms with very high intelligence.

The class use the word breast because they are the only animals that produce milk for their young by the mammary glands (breast). Oddly when it comes to birth, most don't lay eggs, yet some do such as the platypus and echidna.

哺乳類