The African Spur-Winged Goose

If you think death-by-swan is scary, then just wait until you learn about the African spur-winged goose, the one of the most dangerous birds in the world. This strong bird has spurs on its wrists that it uses while attacking, which can actually be poisonous. They aren't always poisonous, but those that feed on a specific blister beetle carry the toxin in their spurs. As little as 10 mg is enough of this toxin can kill a human. The bird's flesh is also deadly if they have been eating the beetles.