Tor deer sex

Sex differences in humans Men are generally hairier than women, and Darwin was of the opinion that hairlessness was related to sexual selection; however, several other explanations have been advanced to explain human hairlessness , a leading one is loss of body hair to facilitate sweating. For example, monogamous primates are known to typically exhibit little sexual dimorphism such as particularly large males armed with huge canines; however, powerful big-toothed males can provide protection against predators and may be bigger for that reason, rather than in order to win confrontations over females. Males and females differing in size can specialize in, and more fully exploit, different food resources while avoiding competing with each other; furthermore, body size can be useful in avoiding predators and may also be of assistance in securing a mate. This is further complicated by the consideration that with larger body size, the skeleton of mammals becomes much more robust and massive relatively speaking.
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Snow monkey attempts sex with deer in rare example of interspecies mating

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Snow monkey attempts sex with deer in rare example of interspecies mating | Science | The Guardian

Received Feb 21; Accepted Jun Abstract We studied the effect of various factors on body size variation of the Eurasian lynx in Norway, using data from lynx collected between and and whose locality of capture, year of birth, sex, and age were known. Body size of lynx in Norway was mainly affected by sex and age. Female skull size and by implication body size was also positively affected by the availability of its main prey roe deer and by latitude, and negatively by the North Atlantic Oscillation NAO. Male size was not affected by any of the environmental factors examined. We interpret the effects of NAO and latitude on body size through their effect on the local climate and particularly snow conditions.
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Sexual selection in humans

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