Look: Elusive animals caught on remote cameras

A wolf pack, California's first gray wolf pack since wild wolves disappeared from the state nearly a century ago, is captured on a trail camera near Mt. Shasta in Siskiyou County, California.

A wolf looks into a trail camera at the 19-mile (30-km) exclusion zone around the Chernobyl nuclear reactor in the abandoned village of Orevichi, Belarus.

A Sierra Nevada red fox is captured by a remote motion-sensitive camera in Yosemite National Park in California, January 29, 2015, the first sighting in the park of one of the rarest mammals in North America, thought to number only 50 on the continent.

A black bear and its cub are shown in the Santa Susana Mountains in southern California.

An adult male mountain lion known as P-64 walks through a tunnel heading south, captured near the Santa Monica Mountains, California.

Two of wolf OR 7's pups peek out from a log on the Rogue River-Siskiyou National Forest, June 2, 2014. The gray wolf, dubbed OR 7, became well known when he traipsed into California in December 2011, making him the first known wild wolf in the state since 1924. He traveled more than any of the seven wolves collared, making him a celebrity and the focus of a documentary being made to track his progress, Wolf OR 7 Expedition.

A wolf roams in the Oregon Cascades in this undated Oregon Fish & Wildlife handout photo taken with a remote camera.

Wolves are seen from a trail camera walking in the 19-mile (30-km) exclusion zone around the Chernobyl nuclear reactor in the abandoned village of Orevichi, Belarus.

A camera installed in a trap captures a glimpse of a jaguar at the Mamiraua Sustainable Development Reserve in Uarini, Amazonas state, Brazil.

A black wolf that appears to be a female is captured by a remote camera by the Oregon Fish & Wildlife.

A deer is seen using the new Gold Creek wildlife under-crossing in Snoqualmie Pass, Washington.

Twelve-year-old male lion brothers Tonyi (L) and Tombo lie with each other at Werribee Open Range Zoo, west of Melbourne, Australia.

Cross River gorillas and their infants are seen in Mbe Mountains, Nigeria.

A tiger is pictured from a camera trap from the western forest of Thailand.