“The male Platypus has venomous ankle spurs, used in vicious territorial battles and fights over mates. The venom is not normally lethal to humans but produces excruciating pain and swelling that lasts for several months. The pain is so excruciating that the victim is rendered almost helpless. The venom can be lethal to dingos, dogs and smaller domestic animals.”
-from Wikipedia entry on Platypus
Platypus are bad-ass.
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