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Matsuzawa, whose research focuses on chimpanzee intelligence, suggests the tradeoff hypothesis as a possible explanation as to why chimpanzees have better memory than humans for immediately capturing and retaining visual stimuli in his paper "Symbolic representation of number in chimpanzees". [1]
Their muscles are 50% stronger per weight than those of humans due to higher content of fast twitch muscle fibres, one of the chimpanzee's adaptations for climbing and swinging. [49] According to Japan's Asahiyama Zoo , the grip strength of an adult chimpanzee is estimated to be 200 kg (440 lb), [ 50 ] while other sources claim figures of up to ...
The great apes (Hominidae) show some cognitive and empathic abilities. Chimpanzees can make tools and use them to acquire foods and for social displays; they have mildly complex hunting strategies requiring cooperation, influence and rank; they are status conscious, manipulative and capable of deception; they can learn to use symbols and understand aspects of human language including some ...
Humans like to imagine they're more evolved than their closest ancestral relatives chimpanzees, but a recent study suggests that may not be true. Researchers have found our hands are rather ...
Corrected for their smaller body sizes, chimpanzees were found to be stronger than humans but not anywhere near four to eight times. In the 1960s these tests were repeated and chimpanzees were found to have twice the strength of a human when it came to pulling weights.
Research in 2007 shows that chimpanzees in the Fongoli savannah sharpen sticks to use as spears when hunting, considered the first evidence of systematic use of weapons in a species other than humans. [32] [33] Captive gorillas have made a variety of tools. [34] In the wild, mandrills have been observed to clean their ears with modified tools.
[5] [6] On the other hand, intragroup violence is lower among humans living in small-group societies than among chimpanzees. Humans may have a strong tendency to differ between ingroup and outgroup, which affects altruistic and aggressive behavior. Also, evidence exists that both intragroup and intergroup violence were much more prevalent in ...
Anatomical evidence suggests they were much stronger than modern humans (possibly stronger than the chimpanzee, given that they're the human's closest living relative) [1] while they were 12-14cm shorter on average than post World War II Europeans, but as tall or slightly taller than Europeans of 20 KYA: [2] based on 45 long bones from at most ...