Yellowstone is home to two species of bears: grizzly bears and black bears. Of the two species, grizzly bears have a much smaller range across the United States. The grizzly bear is typically larger than the black bear and has a large muscle mass above its shoulders; a concave, rather than straight or convex, facial profile; and much more aggressive behavior. The grizzly bear is a subspecies of brown bear that once roamed large swaths of the mountains and prairies of the American West. Today, the grizzly bear remains in a few isolated locations in the lower 48 states, including Yellowstone.In coastal Alaska and Eurasia, the grizzly bear is known as the brown bear.
[{"bears": "grizzly bears", "brown_bear": "yes"}, {"bears": "black bears", "brown_bear": "no"}]
[{"bears": "grizzly bears", "brown_bear": "no"}] [{"bears": "grizzly bears ", "brown_bear": "yes"}, {"bears": "black bears", "brown_bear": "no"}] [{"bears": "grizzly bears|black bears", "brown_bear": "yes"}] [{"bears": "grizzly bears", "brown_bear": "yes"}, {"bears": "black bears", "brown_bear": "no"}] [{"bears": "grizzly bears", "brown_bear": "yes"}, {"bears": "black bears", "brown_bear": "yes"}]