Inside a metal vault here in rural Vietnam is a creature believed to be the most trafficked mammal in the world ... (The tongues can be longer than a foot, and they actually start at the pelvis.) ...

Here are 15 dangerous wild — and domesticated — mammals that need cautious, gentle handling. Height/length: 7-15 in. long ...

"We've come up with a very different family tree for mammals." Many paleontologists ... as he admires a foot-long (0.3-meter-long) fossil skull of a marsupial lion from 40,000 years ago.

These majestic beings, the tallest land mammals, have a neck that ... This domesticated member of the camelid family is indigenous to the high altitudes of the Andes Mountains and is distinguished by ...

The long-tailed weasel resembles the ermine but has a longer tail, 9.5-16 cm (3.6-6.3 in) in length and greater than 44 percent of the head-body length. This is the only other member of the weasel ...

If scientists confirm the creature belongs to the rare species, it will mark only the seventh such specimen ever studied.

Grooved upper incisors and a relatively shorter tail, 17-21 mm (0.75 in), which is about the same size as the hind foot, distinguish this species from the other Adirondack voles. The long, shaggy fur ...

This 2-foot-long, black-masked member of the weasel family once occurred in central grasslands and basins from southern Canada to Texas but is now one of the most endangered mammals in North America.

Inside a metal vault here in rural Vietnam is a creature believed to be the most trafficked mammal in the world ... (The tongues can be longer than a foot, and they actually start at the pelvis.) ...

Inside a metal vault here in rural Vietnam is a creature believed to be the most trafficked mammal in the world ... (The tongues can be longer than a foot, and they actually start at the pelvis.) ...