Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...
April 10 (UPI) --Primates with showy traits, big teeth or bright red chest markings, tend to have smaller testicles, according to a new study. Male primates are hyper-competitive, and no competition ...
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