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In primates, resource competition is a prime motivator for infanticide. Infanticide motivated by resource competition can occur both outside of and within familial groups. Dominant, high ranking, female chimpanzees have been shown to more often aggress towards a lower ranking female and her infant due to resource competition. [5]
Consuming monkey meat is a defining feature of the Bari people, who "perceive the eating of monkey meat as a boundary between them and non-indigenous people"; in recent years, however, some Bari tribe members have shied away from the practice because of how similar monkeys look to humans.
Males and females differ in size and appearance. Both chimpanzees and bonobos are some of the most social great apes, with social bonds occurring throughout large communities. Fruit is the most important component of a chimpanzee's diet; but they will also eat vegetation, bark, honey, insects and even other chimpanzees or monkeys.
Existing chimpanzee populations in West and Central Africa do not overlap with the major human fossil sites in East Africa, but chimpanzee fossils have now been reported from Kenya. This indicates that both humans and members of the Pan clade were present in the East African Rift Valley during the Middle Pleistocene .
Rhesus macaques are often used, as are other macaques, African green monkeys, chimpanzees, baboons, squirrel monkeys, and marmosets, both wild-caught and purpose-bred. [210] [212] In 2005, GAP reported that 1,280 of the 3,100 NHPs living in captivity in the United States were used for experiments. [201]
Sarah Kite, co-founder of Action for Primates, said examples that film-makers carry out included: clamping an infant monkey’s body with pliers; using lit cigarettes to burn a baby monkey tied to ...
Formerly the bonobo was known as the "pygmy chimpanzee", despite the bonobo having a similar body size to the common chimpanzee. The name "pygmy" was given by the German zoologist Ernst Schwarz in 1929, who classified the species on the basis of a previously mislabeled bonobo cranium, noting its diminutive size compared to chimpanzee skulls.
Chimpanzees often eat the marrow of long bones of colobus monkeys with the help of small sticks, after opening the ends of the bones with their teeth. [39] A juvenile female was observed to eat small parts of the brain of an intact skull that she could not break open by inserting a small stick through the foramen magnum. On another occasion, an ...