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California ground squirrel (Spermophilus beecheyi) Order: Rodentia Family: Sciuridae. Thirty species of squirrels, chipmunks, and marmots occur in California. Subfamily Sciurinae (tree squirrels and flying squirrels) Humboldt's flying squirrel, Glaucomys oregonensis. San Bernardino flying squirrel, G. o. californicus (CDFW special concern; endemic)
True horns are found mainly among: Ruminant artiodactyls. Antilocapridae ; Bovidae (cattle, goats, antelopes etc.). Giraffidae: Giraffids have a pair of skin covered bony bumps on their heads, called ossicones. Cervidae: Most deer have antlers, which are not true horns due to lacking a bone core and made of keratin.
The forests of Northern California are home to many animals, for instance the American black bear.There are between 25,000 and 35,000 black bears in the state. [6]The forests in northern parts of California have an abundant fauna, which includes for instance the black-tailed deer, black bear, gray fox, North American cougar, bobcat, and Roosevelt elk.
The animal had a sprawling posture as indicated by analysing its shoulder joints. The skull superficially resembles that of Styracocephalus , but the "horns" are formed from different bones; in Estemmenosuchus the horns are located on the frontals and protrude upward, whereas in Styracocephalus the horns are formed by the tabular and extend aft.
Dominant animals are inclined to be more aggressive with other sheep, and usually feed first at troughs. [64] Primarily among rams, horn size is a factor in the flock hierarchy. [65] Rams with different size horns may be less inclined to fight to establish the dominance order, while rams with similarly sized horns are more so. [65]
One pair of horns is located between the ears, and the other on the forehead. The posterior horns are always longer than the anterior horns, which might be mere fur-covered studs. While the posterior horns each measures 8–12 centimetres (3.1–4.7 in), the anterior ones measure 2–5 centimetres (0.79–1.97 in).
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They are medium-sized, their total length (including tail) ranging from about 7.5 to 15 in (19 to 38 cm), depending on species and individual. As the common name "mountain horned dragons" implies, they tend to prefer higher elevation areas with dense vegetation.