Many mammals have fur the color of brown and black. Why don't they have more exotic colors, like purple and neon pink?

Most mammals wear coats of brown, black, and gray, while parrots flash brilliant reds, reef fish shimmer in electric blue, and chameleons shift between greens and golds. This disparity is not random.

The film discusses the evolution and characteristics of mammals compared to reptiles. It highlights the advantages mammals have developed, such as specialized anatomy for movement, advanced sensory ...

Papers from a conference held at the Laboratory of Brain Evolution and behavior and at the National Museum of American History, Smithsonian Institution, 1981. Neurobehavioral significance of the ...

The sprawling-upright transition across mammal evolution, showing changes in posture and limb bone shape. The transition from sprawling (reptile-like) to more upright (parasagittal) posture and ...

The origin of four-limbed animals known as tetrapods was thought to be fairly straightforward: Fish flopped onto land in the Devonian, evolved, and eventually diversified into the reptiles, birds, ...