A newly described ancient mammal discovered in Texas is turning heads—not just for its size, but for what it reveals about ...

In the Andes Mountains of northern Peru, a long-tailed mammal with a “facial mask” moved through the undergrowth. Suddenly, the ground dropped out underneath its hairy paws, and it fell into a ...

Scientists caught small mammal with facial mask, long snout in trap at national park and discovered new species: Chachapoyas mouse opossum, study said.