When threatened, these animals communicate with each other through various signals such as hissing, curling back the upper lip, and grinding their teeth.As a general rule, bulls with the most widespread antlers are the most attractive ones for females. In order to attract the attention of females, males engage in fights with each other, using their antlers.Canine teeth (ivories) of elk are considered by scientists to be rudimentary tusks.Male elk engage in competitive mating behaviors during the rut, including posturing, antler wrestling and bugling, a loud series of screams which is intended to establish dominance over other males and attract females. In North America, though, males of this species are called "bulls" and females are called "cows". Male elk have large antlers which are shed each year. blood in Changes in red blood picture & serum iron White blood picture of Blackpied cows.
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