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Dorsum yellowish brown to mahogany brown, or mixed dark brownish and grayish, strongly frosted with white; venter whitish on belly, pale brown on chest, yellowish on throat; entire upper surface of interfemoral membrane is heavily furred; ears rimmed with black; length of head and body about 85 mm; adult total length 120-146 mm; forearm 46-55 mm; mass 25-35 g; greatest length of skull 17.0-18.7 ...

Pelage is usually black, brown, or reddish, but some in Pacific Northwest are bluish or whitish. Snout is tan or grizzled, straight or slightly convex in side view. Males grow larger than females, may reach several hundred pounds. Head and body length 150-180 cm, tail about 12 cm, mass about 90-140 kg for females, 115-270 kg for males (Nowak 1991, Burt and Grossenheider 1964). Source: Encyclop...