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Another example, the western grebe, performs a mating ritual that includes running across the surface of water. [1] Surface living animals such as the water strider typically have hydrophobic feet covered in small hairs that prevent the feet from breaking the surface and becoming wet.
A wheeled buffalo figurine—probably a children's toy—from Magna Graecia in archaic Greece [1]. Several organisms are capable of rolling locomotion. However, true wheels and propellers—despite their utility in human vehicles—do not play a significant role in the movement of living things (with the exception of the corkscrew-like flagella of many prokaryotes).
The legs of water beetles have little hairs which spread out to catch and move water back in the power stroke, but lay flat as the appendage moves forward in the return stroke. Also, one side of a water beetle leg is wider than the others and is held perpendicular to the motion when pushing backward, but the leg rotates when the limb returns ...
Charolais calves which were transferred, as embryos, into their Aberdeen Angus and Hereford recipient mothers. Calves may be produced by natural means, or by artificial breeding using artificial insemination or embryo transfer. [5] Calves are born after nine months. They usually stand within a few minutes of calving, and suckle within an hour.
Another example is the blue wildebeest, the calves of which can stand within an average of six minutes from birth and walk within thirty minutes; [5] [6] they can outrun a hyena within a day. [ 7 ] [ 8 ] [ 9 ] Such behavior gives them an advantage over other herbivore species and they are 100 times more abundant in the Serengeti ecosystem than ...
A new analysis of three-toed fossil footprints that date back more than 210 million years reveals that they were created by bipedal reptiles with feet like a bird’s.
A mother and calf in shallow water. Dugongs are long-lived, and the oldest recorded specimen reached age 73. [13] They have few natural predators, although animals such as crocodiles, killer whales, and sharks pose a threat to the young, [18] and a dugong has also been recorded to have died from trauma after being impaled by a stingray barb. A ...
Plantigrade animals, such as humans, normally walk with the soles of their feet on the ground. Unguligrade animals, such as horses and cattle, walk only on the distal-most tips of their digits. Digitigrade animals walk on their distal and intermediate phalanges; more than one segment of the digit makes contact with the ground, either directly ...