Igor Shpilenok / Young female Kamchatka brown bear (Ursus arctos beringianus) playing with oil drum, Kronotsky Nature Reserve, Kamchatka, Far East Russia. May. These bears can develop addiction to sniffing the aviatio...

Igor Shpilenok / Young female Kamchatka brown bear (Ursus arctos beringianus) playing with oil drum, Kronotsky Nature Reserve, Kamchatka, Far East Russia. May. These bears can develop addiction to sniffing the aviatio...

Michel Roggo / Brown bear (Ursus arctos beringianus) fishing for Sockeye salmon in the Ozernaya River, Kamtchatka, Russia, August

Igor Shpilenok,Igor Shpilenok / Kamchatka Brown Bear (Ursus arctos beringianus) sitting in heavy snowfall. Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East, December.

Igor Shpilenok,Igor Shpilenok / Kamchatka Brown Bear (Ursus arctos beringianus) stands on its back legs to more easily determine the source of an unfamiliar sound. Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Fa...

Igor Shpilenok / Kamchatka Brown Bear (Ursus arctos beringianus) by malachite (copper mineral) outcrop. Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East, Valley of the Geysers, October.

Igor Shpilenok,Igor Shpilenok / Ranger station in winter with Kamchatka Brown Bear (Ursus arctos beringianus), Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East, June. Sequence 3 of 3.

Igor Shpilenok,Igor Shpilenok / Kamchatka Brown Bear (Ursus arctos beringianus) on the Pacific coast of Kamchatka. Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East, July.

Igor Shpilenok,Igor Shpilenok / A Kamchatka Brown Bear (Ursus arctos beringianus) standing in breaking waves. Pacific coast of Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East, July.

Igor Shpilenok,Igor Shpilenok / Kamchatka Brown Bear (Ursus arctos beringianus) recently risen from hibernation in the caldera of the Uzon Volcano. Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East, April.

Sergey Gorshkov / NOT FOR WEBSITE Close-up of Brown bear (Ursus arctos) in lake, Kamchatka, Far east Russia, August

Sergey Gorshkov / Kamchatka Brown bear (Ursus arctos beringianus) leaping through water to catch salmon in river, Kamchatka, Far east Russia, August