Bushy-tailed woodrat

When Packrats’ Hoards Are Helpful

Packrat nests, preserved by a combination of the chemistry of urine and the desert air, open a window into centuries of local climate change.
American Pika

The World’s Cutest Mammal on the Brink

The Ili Piku, aka "Magic Rabbit," of China is endangered. But Pika populations are declining globally, not just in China.