But humans and other apes don't, even though our close primate relatives do. The coccyx, or tailbone, is the remnant of a lost tail. This means that their tails move in a side to side motion, cutting through the water like a rudder. A human embryo does have a tail but is absorbed into the fetus during gestation. Grazing animals such as elephants, zebras and giraffes have long, thin tails with a tuft of hair on the end. We still have a tailbone, which supports us while sitting, but we don’t have a visible tail anymore. Some species, including many New World monkeys, have a prehensile tail, which is used like a fifth hand. Well-adapted arboreal mammals frequently are plantigrade, five-toed, and equipped with highly mobile limbs. Most birds, mammals, reptiles, and even fish have tails. Like whales and other marine mammals, these horizontal tails move in an up and down motion to propel the animal forward through the water. Humans however, along with our closest relatives, do much better without any tails at all, even small, which is why we specifically evolved to not have them at all. The marine mammals have been known to use their flippers to get the job done, and their mouths for so-called self-fellation. Now you know why humans don`t have tails. I don't believe women are required to wear bras. Tails are mostly a feature of vertebrates; however, some invertebrates such as scorpions also have appendages that can be considered tails. The humans had been listening in and they had turned green with envy. It was the post with the best photos of elephants breasts that I could find. As a reward he blessed the mammals with tails. “Tails in mammals often serve as a counter balance to the head and assist an animal in movement, especially running. PS — I'm sorry for the headline of the post I linked to. This tail is most prominent in human embryos 31–35 days old. Where there is no tail, there are often embryonic remnants, which like gills can hark back to before the mammals came along. Brachiation, or “arm walking,” in which the animal hangs from branches and moves by a series of long swings, is an adaptation seen in gibbons. A week later all the mammals had returned with coconuts. (Fish tails move side to side; the tails of sea mammals move up and down.) Something I could add is that all reptiles have tails as well. Animals have preserved their tails because they still have a use for them. (except the humans of course.) The Creator Of The Universe was very pleased. If you look at wild cats, ones that run very fast have longer tails.” “Similarly the tree-dwelling monkeys of Africa and Asia, such as macaques, have long tails, which they use for balance, as they move around on all fours.” The DNA to make a tail is probably contained in most mammals, expressed or not. But even so, all mammals have tail bones. In mammals, a tail is the part of the body that corresponds to the sacrum and coccyx. All mammals are vertebrates so they have spines. This has only one exception, the Kiwi bird (birds are technically reptiles). However, all animals use their tails for non-uniform purposes, although they mostly have to … This bare patch is known as a "friction pad". Mammals without visible tails, like humans, do have a coccyx referred to as a tailbone that does not protrude externally. The end of the spine is extended by many into a tail that may or may not be useful. All mammals have a tail at some point in their development; in humans, it is present for a period of 4 weeks, during stages 14 to 22 of human embryogenesis. Many mammals with prehensile tails will have a bare patch to aid gripping. Each mammal had a different tail. Dolphins, however, do not have this characteristic fish trait, as their tails align horizontally. 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