Grizzly Bear or Brown Bear


  • grizzly bear fighting
  • Bear Spray Event Flyer

    Bear spray giveaway events scheduled in the Upper Snake

    Fish and Game Commission awarded grant funding to the Western Bear Foundation to distribute free cans of bear spray in the Island Park area to recreationists who present a current, valid Idaho hunting and/or fishing license.

  • Grizzly Research Bear

    Biologists to begin grizzly bear research trapping in the Caribou-Targhee National Forest

    Department Fish and Game biologists will begin trapping efforts in the Upper Snake Region from June 30 until the end of August. Trapping will primarily take place in the Caribou-Targhee National Forest within the caldera in Island Park, west of Highway 20 along the Centennial Mountain Range, and the Cave Falls area near the Wyoming border.

    When trapping operations are being conducted, the area around the trap site will be marked with bright warning and closure signs. It is important that the public respect these signs and not enter posted areas.

  • Grizzly bear in Yellowstone Park

    Black bear hunters urged to use increased caution after grizzly spotted in Unit 10 and 12

    Grizzlies are not commonly seen in this area so hunters are asked to use increased vigilance after a radio-collared grizzly bear was spotted by a hunter on Thursday, June 13.

  • medium shot of a grizzly in a pasture September 2008

    Grizzly bear euthanized near Copeland

    On June 1, Fish and Game Conservation Officers euthanized an adult grizzly bear near the town of Copeland in a joint effort with U.S. Department of Agriculture Wildlife Services and the U.S. Fish and Wildlife Service.


  • Island Park Grizzly
  • Grizzly Bear Track

    Collared grizzly bear in the Coeur d'Alene National Forest is a reminder to be bear aware

    A grizzly bear was confirmed northeast of Magee in the Coeur d’Alene National Forest on April 29. Both grizzly bears and black bears can be found in most of the Panhandle and people are encouraged to be aware and take appropriate precautions when recreating in bear country.


  • Grizzly tracks in the snow

    Bears are waking up around the Upper Snake Region

    As the days get longer and the snow starts melting, both hunters and bears are becoming more active in the Upper Snake Region. "Whether you are pursuing bears, turkeys, or just out enjoying the spring weather, people need to be aware that they are in bear country," says Jeremy Nicholson, Bear Biologist for the Idaho Fish and Game. "Both grizzlies and black bears have been seen on trail cameras in the Island Park area recently and lots of people have been seeing tracks." 

  • Wildlife Weekend Public Program for Families-Bears of Idaho

    Come learn about black bears and grizzly bears in Idaho. How are they the same and how are the different? Find out how they live, what they eat, and how to be safe when in bear country. This is an open house-style event. Free (donations encouraged). This program is designed for families with children ages 3-13.

  • grizzly_general

    Information Sought in Panhandle Grizzly Bear Shooting, reward available

    An adult female grizzly bear was shot and killed near Spruce Lake in northern Boundary County over Labor Day weekend. Grizzly bears are protected by both state and federal law and the loss of a breeding female is a major setback to the great bear’s recovery in the Cabinet-Yaak Ecosystem. If you have any information concerning this poaching, please contact: Senior Conservation Officer Brian Johnson – (208) 267-4085.

Grizzly Bear or Brown Bear

Ursus arctos

Big Game
View Species Profile

Health Issues Which May Affect This Animal

What Causes This Disease?

Trichinosis is a disease caused by a nematode parasite, Trichinella spiralis.

Where Is The Disease Found?

Trichinosis occurs throughout North American and can be found in grizzly bears, polar bears, black bears, feral swine, mountain lions, wolverines, wolves, coyotes, and foxes. Trichinosis has been documented in black bears and mountain lions in Idaho. Trichinosis has been documented in humans associated with consuming home-made jerky made from a cougar and a black bear in Idaho.

Signs of Disease

Animals infected with trichinosis generally appear healthy. Trichinosis is hard to detect when butchering because there are few lesions and the cysts are very small. The cysts are most common in the muscles of the jaw, tongue, and diaphragm. Animals that are infected with adult worms may have swollen intestines with small bruises on the intestinal wall. Affected muscles and associated lymph nodes may be soft and swollen.

Read More About Trichinosis