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Urban Animals - Art Gallery of Alberta

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The <strong>Alberta</strong> Foundation for the <strong>Art</strong>s Travelling Exhibition Program<br />

Animal Studies: Grizzly Bear<br />

The grizzly bear is a subspecies <strong>of</strong> brown<br />

bear that generally lives in the uplands <strong>of</strong><br />

western North America. It is thought to descend<br />

from Ussuri brown bears which crossed to Alaska<br />

from Eastern Russia 100,000 years ago, though<br />

they did not move south until 13,000 years ago.<br />

The word ‘grizzly’ refers to the ‘grizzled’ or grey<br />

hairs in the animals’ fur.<br />

Jason Carter<br />

Mother Bear and her cub in the backcountry <strong>of</strong><br />

<strong>Alberta</strong>, 2012<br />

Acrylic on canvas<br />

Collection <strong>of</strong> the artist<br />

Grizzly bears are North America’s second<br />

largest land carnivore, after the Polar bear.<br />

Size and weight varies greatly according to<br />

geographic location. The largest populations<br />

are found in coastal areas where weights are as<br />

much as 550 kg (1,200 lb). The females are on<br />

average 38% smaller than the males.<br />

On average grizzly bears stand about 1<br />

metre (3.3 ft.) at the shoulder when on all fours<br />

and 2 metres (6.6 ft.) on their hind legs.<br />

The grizzly bear’s colouring ranges widely<br />

depending on geographic areas, from white to<br />

almost black to all shades in between. Their fur is<br />

very thick to keep them warm in brutal, windy, and<br />

snowy winters. The grizzly also has a large hump<br />

over the shoulders which is a muscle mass used to<br />

power the forelimbs while digging.<br />

The muscles in the back legs are very powerful, providing enough strength for the bear to stand<br />

up and even walk short distances on its hind legs, giving it a better view <strong>of</strong> its surroundings.<br />

Despite their large size, grizzlies can run at speeds <strong>of</strong> up to 55 kilometres per hour.<br />

Grizzly bears have one <strong>of</strong> the lowest reproductive rates <strong>of</strong> all terrestrial mammals in North<br />

America. This is due to numerous ecological factors. First, grizzly bears do not reach sexual<br />

maturity until they are at least five years old. Once mated with a male in the summer, the female<br />

delays embryo implantation until hibernations, during which abortion can occur if the female<br />

does not receive the proper nutrients and caloric intake. On average, females produce two cubs<br />

in a litter and the mother cares for the cubs for up to two years. During this time the female will<br />

not mate and, even once the young leave, females may not produce another litter for three or<br />

more years depending on environmental conditions. Exacerbating all <strong>of</strong> this is the fact that male<br />

grizzly bears have large territories ranging up to 4,000 square kilomteres. This makes finding a<br />

female scent difficult in such low population densities.<br />

AFA Travelling Exhibition Program, Edmonton, AB. Ph: 780.428.3830 Fax: 780.421.0479<br />

youraga.ca

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