But it did not clearly explain if the females are venomous. The male platypus produces venom in the crural glands located beneath the calcaneus spur on each of its hind limbs. A typical platypus is 15 inches (38 centimeters) from its head to the end of its rump. It seems that the information that produces venom is found in chromosomes, which is why only males produce it. Interestingly, the platypus is one of only two types of mammals (the other being the echidna) that lay eggs. The Duck-billed Platypus is about the size of a cat. ", or if it actually isn't all that lethal. Female platypus lay eggs (1-3 each spring) Adult males have venomous spurs on their hind legs . Both males and females have spurs on their ankles, however it is only the male who produces venom. After mating, the female will ignore all other mating attempts during that breeding season, and the male may go on to find other females to mate with. In short, we can say that platypus venom is and isn't fatal. Follow us @livescience, Facebook & Google+. Actually it's the male platypus that is venomous. With the bill and webbed toes of a duck, tail of a beaver and body of an otter, platypuses are easily one of the strangest-looking animals on the planet. His account includes a drawing of the animal. One of the reasons behind the platypus’s physiological uniqueness comes from its evolutionary history as a monotreme. The platypus is among nature's most unlikely animals. Only males platypuses produce venom, and only during breeding season. The pain is so strong that it cannot be relieved with morphine. Female platypuses are born with rudimentary spurs that do not develop, dropping off before they reach one year old. The offspring nurse for about four months. Please refresh the page and try again. The venom of a platypus can kill small animals, even dogs. In Australia there have been a few cases of platypus stings. After the period of intense pain, it develops into a hyperalgesia, that is, increased pain sensitivity, which can last for days or even months. For the new study, the team analyzed three museum platypus specimens (two males and one female) ... and wields venomous spurs. Female mammals feed milk to their young through specialized nipples or teats; female platypuses do not have teats and instead simply “sweat” milk to their young. Platypus sex involves venomous battles, tail biting and courtship dances. It seems that the information that produces venom is found in chromosomes, which is why only males produce it. Defensins are produced in the animal's immune system. Favorite animal- I've been reading up on them and found that platypuses are venomous!!! FALSE FALSE. How Strong Is Their Venom? The male of this species has a spur on its hind legs that releases a venom which can cause intense pain. "It's a bit of a dance," Thomas said. Suppose a scientist is studying the platypus, one of the few venomous mammals. Live Science is part of Future US Inc, an international media group and leading digital publisher. Strangely, only male platypuses have spurs; female platypuses lose theirs during development. In the same area of the hind foot where the male has the poisonous spur, the female platypus only develops two buds which drop off in their first year of life never to appear again. Dog fatalities as a result of platypus stings have been documented. In humans, this venom causes pain and swelling, increased sensitivity to pain in general (called hyperalgesia), hyperventilation, low blood oxygen and convulsions, depending on the dose received. 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