In Yellowstone, we are fortunate to be home to two species of bears: grizzly bears and black bears. Grizzlies are found in only a few isolated regions in the lower 48 states—the Greater Yellowstone Ecosystem (GYE) and northwest Montana—while black bears have a wide range across the entirety of the United States. There are currently somewhere around 700 grizzlies in the GYE. Though an exact number is unknown, black bears are considered common in Yellowstone.
You can help protect the bears of Yellowstone.
For most visitors, there is nothing quite like the excitement of seeing a bear in the wild. Many come to Yellowstone solely to see the park’s remarkable wildlife, and bears are often at the top of the list. While grizzly bears are typically much larger than black bears, they can at times be difficult to tell apart.
Whether we are talking about the distinct visual characteristics of the bears, or simply how to distinguish one track from another, we’ve put together some tips and stats to help identify both.
Scientific Name: Ursus arctos
Color: Varies from black to blonde; frequently with white-tipped fur giving a grizzled, “silver-tipped” appearance. In the Yellowstone ecosystem, many grizzly bears have a light brown girth band.
Height: About 3-1/2 ft (1.0 m) at the shoulder.
Weight: Male: 216-717 lbs (98-325 kg); Female: 200-428 lbs (91-194 kg)
May live 15-30 years.
Quick identifier: Rump lower than shoulders.
Scientific Name: Ursus americanus
Color: Varies from pure black to brown, cinnamon, or blonde; in the Rocky Mountains, approximately 50% are black with a light brown muzzle
Height: About 3 ft (0.9 m) at the shoulder
Weight: Male: 210-315 lbs (95-143 kg); Female: 135-160 lbs (61-73 kg)
May live 15-30 years.
Quick identifier: Hump usually absent, rump higher than shoulders.
Having bears in our backyard here in Yellowstone is also a responsibility. All bears are potentially dangerous. See the list below and be sure to read through all of the park’s bear safety tips.
- Carry bear spray
- Hike in groups of 3 or more people.
- Stay alert.
- Make noise.
Sources and resources
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