Grizzly Bear 
223 
devour with relish berries of all kinds, acorns and nuts, dig 
up edible roots — in fact, nothing seems to be refused by 
them. 
Key of the Species 
A. Size very large, length of adults 7 feet or more; claws on front 
feet much longer than those on hind feet; fur shaggy, 
variable in color, but never black, usually either brown 
or yellowish brown, with lighter tips. 
U. horribilis and U. h. horriaeus, p. 223 
B. Smaller, length of adults much less than 7 feet; claws of front 
feet little if any longer than those of hind feet; color 
black or cinnamon (brownish). U. americanus, p. 232 
Ursus horribilis (Lat., horrible). Grizzly Bear. 
Ursus horribilis horriaeus (Lat., horrid, terrifying). 
Sonora Grizzly. 
Ursus horribilis Ord., Giithr. Geog., 2d Amer. ed., ii., pp. 291, 
299, 300 (1815). 
Type locality. — Montana. 
Ursus horribilis horricBus Baird, Rept. Alex. Boundy. Stir., Mamm., 
ii., pp. 24-29 (1859). 
Type locality. — Copper mines, Rio Mimbres, Grant County 
southwestern New Mexico. 
The status of the Colorado Grizzly is somewhat uncertain, and 
it is quite likely that both these forms occur in the State, in which 
case the typical form will be in the more northern portions, and the 
Sonora Grizzly in the southern. 
Measurements. — (From Carter's notes, in the Colorado Museum 
of Natural History): Total length, 90; tail vert., 5. 
Description. — The hairs are yellowish, gray-tipped, with dark 
base ; the depth of the color of the base varies from brown to nearly 
black; legs and paws dark, almost black; ears brownish. It is the 
gray-tipping of the hairs which gives the grizzly or "silver-tip" 
color to the coat. Some specimens are dark brown, but a somewhat 
different brown from the cinnamon phase of the black bear. There 
is no difference in color between the two forms or subspecies of the 
Grizzly Bear. It is in the skull that the differences between the 
common Grizzly and the Sonora Grizzly are found. In the former 
the frontal region is elevated above the orbits, and highest behind 
the postorbital processes; in the latter the frontal region is not 
elevated above or behind the orbits, and is highest at, flattened 
and concave between, the postorbital processes. 
