Beauty may be in the eye of the beholder, but even for gorillas, some traits stand out. A new study conducted in the rainforests of the Republic or Congo shows that female western lowland gorillas seek out bigger mates to father their offspring. Conservationists with WCS and the Max Planck Institute for Evolutionary Anthropology spent 12 years studying gorilla mating choices in Nouabalé-Ndoki National Park. Their findings illuminate an important factor in the evolution of great...

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