In winter, if environmental factors are unfavorable, the Pacific pocket mouse may hibernate underground until spring brings better conditions. But if adequate food supplies are available, the mouse ...

A tiny mouse is proving that even the smallest beings can make a big impact — by cementing his place in the record books. Pat, a Pacific pocket mouse named after actor Sir Patrick Stewart, has ...

Pocket friend. You can hide me in your pocket if you want, 'cuz I'm the Arizona pocket mouse, or Perognathus amplus. Just don't take me out in the daylight, because I prefer to play at night. All ...

SAN DIEGO (Aug. 21, 2025) – Endangered Pacific pocket mice, native to Southern California, were once thought to be extinct until a tiny remnant population was rediscovered in the mid-1990s. San Diego ...

Since 1970, wildlife populations globally have plummeted by about 73%. One driver is habitat fragmentation that isolates small populations, leading to inbreeding and fewer healthy offspring.

A tiny California mouse now has a big title after winning a Guinness World record for longevity. A Pacific pocket mouse named Pat — after “Star Trek" actor Patrick Stewart — received the Guinness ...

Forty-nine olive-backed pocket mice, Perognathus fasciatus were collected during 2011 and 2012 from 4 sites in Wyoming and examined for coccidian parasites. Fifteen (31%) were found to be passing ...

Endangered Pacific pocket mice, native to Southern California, were once thought to be extinct until a tiny remnant population was rediscovered in the mid-1990s. Subscribe to our newsletter for the ...