Platypus: Venomous Mammal
The platypus is already famous for its bizarre appearance, but few realize that males possess a rare mammalian trait: venomous spurs on their hind legs. During the breeding season, these spurs can deliver a painful toxin, strong enough to incapacitate small animals and cause excruciating pain in humans, sometimes compared to snake bites. This unusual adaptation is a powerful reminder that even mammals can evolve venom for self-defense.