Class

Mammalia (Mammals)

Procyon lotor. Photo: (c) Paul Steeves, some rights reserved (CC BY-NC)

iNaturalist • Wikipedia

Mammals are any vertebrates within the class Mammalia (/məˈmeɪliə/ from Latin mamma “breast”), a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands. Females of all mammal species nurse their young with milk, secreted from the mammary glands.

— Wikipedia

Subtaxa

Subclass: Theria (Therians)

Where in Humboldt

Discussion

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