Our earliest mammalian ancestors avoided the dominant dinosaurs by only coming out at night and having uniformly dark, ...

Underneath all that hair, polar bear skin is actually black. The black skin ... sorts of colors: yellow, gray, orange, and even green. That's because polar bear fur is transparent and hollow.When ...

Its winter fur is long and bushy, and predominantly a mottled gray in color, although nearly pure white, red, or brown to black also occur.

The team used mice with black fur to observe whether their hair became ... The results showed that mice developed gray hair less frequently than those that did not receive luteolin.

and a black-tipped tail are some of the characters by which the gray fox differs from the red fox. Other differences include coarser fur, a shorter muzzle and legs, dark brown eyes, and a mane of ...