In many four-legged animals ... “We show that despite long evolutionary distance from the ancestral condition, the early primordium of the mouse external genitalia preserved the capacity ...

Hikers in Papua New Guinea heard an “eep-eep-eep” sound and followed it to a yellow-spotted animal. Take a look.

The meadow jumping mouse has hind legs much longer than the front legs and a tapered tail that is nearly twice as long as the combined length of the head and body. The coarse fur is yellowish brown ...