Brown Bear (Ursus arctos)
Image credit: © San Diego Zoo Wildlife Alliance. All rights reserved.
Describer (Date): Linnaeus 1758
Species: Ursus arctos
Head/Body Length (Males & Females):
Shoulder Height: up to 1.5 m (5 ft)
Tail Length: 60-200 mm (2-8 in)
Pelage: Pale tan, blond, gold, many shades of brown to black, gray or silver; grizzly's guard hairs pale at tips.
|Distribution & Status||Behavior & Ecology|
Range: Europe, Middle East, Asia, northwestern U.S., western Canada
Habitat: Widest variety of habitats of any bear species; dry asian steppes, temperate forests; sea level to 5,000 m (16,404 ft)
IUCN Status: Least Concern (2016 assessment)
Population in Wild: More than 200,000
Locomotion: Normal gait - slow shuffle; walk 5.5-6 km/hr; gallop 56 km/hr (35 mp/h)
Activity Cycle: Diurnal in North America (but active day and night when food scarce); largely nocturnal in Europe; in cold climates undergo winter dormancy.
Social Groups: Lasting bonds only between female and young.
Diet: Wide variety of plants and animals; diet more carnivorous than that of American and Asiatic black bears.
Predators: Mainly humans; rare attacks in Siberia by tigers.
|Reproduction & Development||Species Highlights|
Sexual: Female - 3.5 yrs; first cubs 4-8 yrs; Male - about 5.5 yrs.
Gestation: 6-7 months
Litter Size: 2 - 3 common; up to 4
Birth weight: 400-500 g (14-18 oz)
Age at Weaning: 1.5-2.5 years
Longevity: About 25 years
© 2010-2019 San Diego Zoo Wildlife Alliance. Updated 2015. Minor updates 2019.
How to cite: Brown Bear (Ursus arctos) Fact Sheet. c2010-2019. San Diego (CA): San Diego Zoo Wildlife Alliance; [accessed YYYY Mmm dd]. http://ielc.libguides.com/sdzg/factsheets/ brownbear.
(Note: replace YYYY Mmm dd with date accessed, e.g., 2015 Jan 15)
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