quadrupedalism
Quick Summary
Quadrupedalism refers to locomotion on four legs. Many animals, such as horses and cows, are quadrupeds. This posture is the basic plan for most terrestrial vertebrates and mammals. While primates inherited this quadrupedal stance, many have evolved to use their limbs for arboreal locomotion, with some, like gibbons, becoming bipedal on the ground.123
Reptiles typically exhibit a sprawled gait with limbs projecting outward, which is energy-efficient for their lifestyles. Some reptiles, like crocodiles, can adopt a more erect posture, and certain lizards and dinosaurs were bipedal. Human bipedalism is unique, characterized by striding rather than hopping or waddling, and is a development from the primate body plan. This shift to bipedalism freed the hands for other activities but also introduced disadvantages like slower speed compared to quadrupedal predators.456
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primateFour types of locomotionQuadrupedalism involves both forelimbs and hind limbs, of course, although not to an equal extent. Some quadrupeds are hind limb-dominated; in others, the forelimb and the hind limb are equally important. The hind limb-dominated primates, such as the langurs and colobus monkeys, employ a largeā¦
Read MoreQuadrupedalism involves both forelimbs and hind limbs, of course, although not to an equal extent. Some quadrupeds are hind limb-dominated; in others, the forelimb and the hind limb are equally important. The hind limb-dominated primates, such as the langurs and colobus monkeys, employ a largeā¦
Read More- primateSize range and adaptive diversity
ā¦ground-living locomotion, which is called quadrupedalism. Within this category there are at least two variations on the theme: (a) knuckle-walking quadrupedalism, and (b) digitigrade quadrupedalism. The former gait is characteristic of the African apes (chimpanzee and gorilla), and the latter of baboons and macaques, which walk on the flats ofā¦
Read Moreā¦ground-living locomotion, which is called quadrupedalism. Within this category there are at least two variations on the theme: (a) knuckle-walking quadrupedalism, and (b) digitigrade quadrupedalism. The former gait is characteristic of the African apes (chimpanzee and gorilla), and the latter of baboons and macaques, which walk on the flats ofā¦
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