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Most bipedal animals move with their backs close to horizontal, using a long tail to balance the weight of their bodies. The primate version of bipedalism is unusual because the back is close to upright (completely upright in humans), and the tail may be absent entirely. Many primates can stand upright on their hind legs without any support.
Humans have a foot arch rather than being flat footed. [7] When non-human hominids walk upright, weight is transmitted from the heel, along the outside of the foot, and then through the middle toes while a human foot transmits weight from the heel, along the outside of the foot, across the ball of the foot and finally through the big toe.
[2] [41] The word reindeer is an anglicized version of the Old Norse words hreinn ("reindeer") and dýr ("animal") and has nothing to do with reins. [42] The word caribou comes through French, from the Mi'kmaq qalipu, meaning "snow shoveler", and refers to its habit of pawing through the snow for food. [43]
“Maybe the reason why we have this condition in humans is because of this trade-off that our ancestors made 25 million years ago to lose their tails,” Yanai said.
Feet have evolved many forms depending on the animal's needs. One key variation is where on the foot the animal's weight is placed. Some vertebrates: amphibians, reptiles, and some mammals such as humans, bears, and rodents, are plantigrade. This means the weight of the body is placed on the heel of the foot, giving it strength and stability.
Here's why a hawk might fly into your life (and if that's a good thing). ... smaller birds will attack and annoy red-tails, representing outside forces trying to hamper our ability to take flight ...
The Year Without a Santa Claus, a Christmas special from Jules Bass and Arthur Rankin, Jr., turns 50 this December. The beloved special was adapted from the book of the same name by Phyllis ...
Welsh Mountain sheep (Welsh: Defaid, singular Dafad, Mynydd Cymreig, pronounced [ˈdevaɪd ˈmənɪð ˈkəmrɛɨɡ]) are small, hardy sheep from the higher parts of the Welsh mountains. [1] The males have horns, and the females are polled (hornless); they have no wool on the face or legs, and they have long tails (normally left un docked ).