GRIZZLY BEAR

Urasus arctos horribilis

SURVIVAL

Grizzly bears are specially adapted to survive the changing seasons. During warmer months, they eat massive amounts of food so they can live off during the winter, when food is scarce.

Big image

DIET

The Grizzly Bear may eat 40 kg of food each day, gaining over 1 kg of body weight a day. As omnivores, grizzlies will eat anything nutritious they can find, gorging on nuts, fruit, leaves, roots, fungi, insects, rodents, sheep, elk and a variety of animals including salmon and other fish. Thier diet depends on the season.
Big image

HIBERNATING

The bears settle in their dens to hibernate for the winter. This deep sleep allows the grizzlies to conserve energy. Their heart rate slows down from 40 beats per minute to 8, and they do not go to the bathroom at all during these months of slumber.

BREEDING

The cubs stay under their mother’s care for 2-3 years. While mother grizzlies are fiercely protective of their cubs, nearly half the cubs do not survive past the first year, falling to disease, starvation, and predators like wolves, mountain lions, and adult male grizzlies.

WHY IT IS ENDANGERED

Between 1800 and 1975, grizzly bear populations in the lower 48 states decreased from estamates or more than 100,000 to less 1000.The grizzly was eliminated from much of the west by the late 1800's.

Some grizzly bears are accidentally killed by huters who mistake them for black bears, which is legal.

WHAT WILL HAPPEN IF THE GRIZZLY BEAR GOES EXTINCT