A mouse gives birth to identical-twin sisters. One has brown fur and will grow up to be lean and healthy; the other has yellow fur and is destined to be obese and prone to disease. How can two ...

Polar bears aren't actually white.Turns out, they can come in all sorts of colors: yellow, gray, orange, and even green. That's because polar bear fur is transparent and hollow.When light strikes ...

The mice with golden yellow shaggy fur are said to be a step towards creating the most mammoth-like elephant possible: In the ...

Jaguars have brownish-yellow fur with dark rosettes. Often confused with leopards, jaguars may be distinguished by the additional marks in the center of these rosettes. Jaguars also have stockier ...