18The Pacu FishMatt Weber: August 19, 2013 | 3,370,684 views
Pacu is a term of Brazilian Indian origin. When the large fish of the Colossoma genus entered the aquarium trade in the U.S. and other countries, they were erroneously labeled pacu. In the Amazon, the term pacu is reserved to smaller and medium sized fish in the Metynnis, Mylossoma and Myleus genera.
These fish are rumoured to bite human testicles, earning it the nickname "ball-cutter".
17The Panda Ant
Ants can be pretty annoying, but add some fur and panda print, and you've got yourself an adorable insect! But did you know that, despite the name, this is actually a species of wasp, not ant? Crazy! Found in Chile, the wingless females resemble large, hairy ants - hence the name. These insects might look cute, but they've got one nasty sting.