Mammals (formally Mammalia) are a class of vertebrate animals whose females are characterized by the possession of mammary glands while both males and females are characterized by sweat glands, hair, three middle ear bones used in hearing, and a neocortex region in the brain.
| Kingdom: | Animalia |
| Phylum: | Chordata |
| (unranked) | Craniata |
| Subphylum: | Vertebrata |
| Infraphylum: | Gnathostomata |
| Superclass: | Tetrapoda |
| (unranked) | Amniota |
| Class: | Mammalia |
0 Responses to Mammalia