How Old Are Boy Dogs When They Are Fully Grown Are Duck Billed Platypuses Poisonous – A Unique But Venomous Australian

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Are Duck Billed Platypuses Poisonous – A Unique But Venomous Australian

Platypus is one of the few venomous mammals. Two species of Caribbean solenodon and several species of shrews use poisonous saliva to subdue prey, often larger than themselves, but the platypus has something completely different and unknown functions.

Posterior ankles are found in all three species of monotreme. With their associated glands, they are known as the crural system. In females of all species of monotreme, the spur is lost during the first year of life. Although spurs and glands persist in male echidnas of both species, echidnas do not appear to use a venom injection system; platypus works.

Changes in spur structure in male platypuses can be used to age the animals up to 15 months after they have left the breeding den. Fully grown adult spurs are about 15 millimeters (2 in) long, can be detached from the ankles, and can be driven into an object by the action of the hind leg muscles.


The puncture itself is painful, but the injected venom can lead to symptoms ranging from local pain and swelling to paralysis of an entire limb in humans.

When this species was hunted for its fur, the animals were stunned by a heavy-caliber shot fired beneath them in the water, and a dog was sent to retrieve the animal. There are numerous stories of dogs being killed by a platypus recovering and forcing them to muzzle.


The nature of the poison is unknown, as is its function. One early naturalist suggested that the male used his spurs to subdue the female during mating, but more recent observations indicate that the female may initiate much of the courtship and does not require such subjugation.

The glands associated with the spur advance and retreat with the testes during the breeding season, and their function is assumed to be related to reproduction. Of course, males are more aggressive towards each other and towards other animals at this time of year.

The social system of platypuses is completely unknown, but the retention of the crural system only in male platypuses seems to indicate that it may be used to establish territories or access mates during the breeding season. In the wild, animals likely have the opportunity to escape such encounters, which are known to lead to death in captivity. The spurs certainly act as a deterrent to predators, but their loss in females suggests that this is not their primary function.

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