Platypuses are often seen as goofy due
to the fact that they’re fuzzy, duck-billed,
egg-laying mammals, but in reality they
can be pretty vicious. Male platypuses
have venomous barbed hooks on their
rear feet. If you happen to get speared
by one, you’ll have to yank it out while
suffering a pain so intense, not even
morphine will dull it. Source