VIDEO: Amur tiger and cubs in the wild

The Wildlife Conservation Society released camera-trap video of rarely seen Amur tigers in the Sikhote-Alin Biosphere Reserve in Russia. The video shows an adult female with three big cubs. Amur tigers are listed as endangered.

"The cats are using an overgrown forest road as a travel corridor; the same type of road patrolled by poachers with spotlights," WCS said in a statement. "WCS is working in this region with Russian collaborators to close old logging roads to protect Amur tigers and their prey. The footage is a sign that these efforts may be working."