The Platypus is a semi-aquatic mammal widespread to eastern Australia, including Tasmania. It is the only mammalsthat lay eggs instead of giving birth to live young. Males have a venomous spur on their hind legs. The calcaneousspur found on the male platypus's hind limb is used to deliver venom. Platypus is one of the few venomous mammalsthat can deliver venom capable of causing severe pain to humans.
Although the venom is not lethal to humans, it is so excruciating that the victim may be incapacitated. Oedema rapidly develops around the wound and gradually spreads throughout the affected limb. Information obtained from case histories and anecdotal evidence indicates that the pain develops into a long-lasting hyperalgesia that persists for days or even months.
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