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The venom-delivering spur is found only on the male's hind limbs. The platypus is one of the few living mammals to produce venom.The venom is made in venom glands that are connected to hollow spurs on their hind legs; it is primarily made during the mating season. [1]
The body and the broad, flat tail of the platypus are covered with dense, brown, biofluorescent fur that traps a layer of insulating air to keep the animal warm. [21] [26] [33] The fur is waterproof, and textured like that of a mole. [34] The platypus's tail stores fat reserves, an adaptation also found in the Tasmanian devil. [35]
Male platypuses have sharp spurs on their back legs shaped like a canine tooth. These hollow spurs measure 0.59 to 0.71 inches long and connect to crural glands in the animal’s upper thighs.
The spurs have enough strength to support the weight of the platypus, which often hangs from the victim, requiring assistance for removal. Most of the evidence now supports the proposition that the venom system is used by males on one another as a weapon when competing for females, taking part in sexual selection .
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A stinger (or sting) is a sharp organ found in various animals (typically insects and other arthropods) capable of injecting venom, usually by piercing the epidermis of another animal. An insect sting is complicated by its introduction of venom , although not all stings are venomous.
They have elongated and slender snouts that function as both mouth and nose, and which have electrosensors to find earthworms, termites, ants, and other burrowing prey. [7] This is similar to the platypus , which has 40,000 electroreceptors on its bill, but the long-beaked echidna has only 2,000, while the short-beaked echidna, which lives in a ...
The monotremes, including the semi-aquatic platypus and the terrestrial echidnas, are one of the only groups of mammals that have evolved electroreception. While the electroreceptors in fish and amphibians evolved from mechanosensory lateral line organs, those of monotremes are based on cutaneous glands innervated by trigeminal nerves .