Chimpanzee vs gorilla vs orangutan image9/25/2023 Talking about strength, one of the most commonly compared characteristics – when talking about wildlife, in general – is the bite force.Īs primates, humans have a lousy bite of about 162 pounds per square inch (PSI). This makes orangutans at least 100 pounds heavier (and a lot stronger) than chimps. Their average weight is about 100-130 pounds they can grow larger in captivity, but a healthy adult male’s weight still won’t exceed 200 pounds. However, larger orangutans can weigh more than this, with some of the heaviest males reaching hefts up to 300 pounds.Ĭhimps are comparatively smaller. Male orangutans have an average weight of about 150-180 pounds. See also What Do Bobcats Sound Like? (Answer) While the height differences between chimps and orangutans are minimal, orangutans are generally heavier. Both species have long arms, orangutans due to the arboreal habitat, chimps due to the “knuckle-walking” locomotion – they actually use all four limbs for moving, even if they seem to be standing on their hind limbs.īoth orangutans and chimpanzees can have an arm span reaching between seven and eight feet, depending on height. Female chimps, however, tend to grow slightly taller than orangutan females at 3.5 feet.Īn important similarity between the two is the arm span. Females are smaller than males, standing at an average height of about 3.3 feet.Ĭhimp males can grow up to 5.5 feet tall, but the truth is that most adult males only reach a height of about four feet. There aren’t important height differences between orangutans and chimps however, orangutans generally tend to grow larger and are often heavier.Īs far as height is concerned, most adult orangutans have a height between 4.1 and 5 feet. There are important differences between these apes, from strength to behavior and habitat. However, sharing a family and part of the genome doesn’t make the two alike. Orangutans and chimpanzees are two great ape species in the Hominidae family. Chimpanzee: Similarities And Differences Photo: Jane Rix / Shutterstock “Their emphasis on differences in the cerebellum between humans and other species reinforces growing evidence that the cerebellum was much more important in human brain evolution than has generally been recognised. “I applaud that they have cast the comparative net more widely than usual human-chimpanzee comparisons,” says evolutionary anthropologist Robert Barton at Durham University in the UK. This could reflect increased brain modularisation, possibly for specific functions including symbolic communication, perception, emotion and decision-making. Digital models of human brains had much more variation around the shared pattern than apes, especially in the cerebellum of the brain. “It’s not the pattern itself but in the variation of this pattern,” Neubauer explains. However, although we now know that other great apes do in fact show some of the brain asymmetry that we do, the exact style of the asymmetry in humans is still unique. What’s more, it is no longer evident that our early human ancestors, whose fossils show the asymmetric pattern, evolved specific functions that rely on the left or right side of the brain. This can’t be so now that we know gorillas and orangutans share the pattern. Doing so suggested our pattern of asymmetry was unique, evolving from increased brain specialisation after human and chimpanzee lineages split over 4 million years ago. Earlier studies only compared human brain asymmetry with chimpanzees – which alongside bonobos are our closest living relatives. This may help explain why we’ve failed to spot the deep evolutionary history of brain asymmetry previously. They all shared a common pattern but it was less pronounced in chimpanzees than in the other species. When the hemispheres were superimposed, mismatching dots revealed both the pattern and magnitude of brain asymmetry. Brain shape is imprinted on the inside of the skull during growth, so the team used CT scanning to detect these details in the hollow skulls and then created digital models of each brain.Īnatomical features on the left and right sides of each brain model were then marked with digital dots. His team analysed skulls from 95 humans, 45 chimpanzees, 43 gorillas and 43 orangutans. Read more: Fossil discovery could be the last common ancestor to all apes
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