One more thing to look forward to on the Amazon - barking piranhas (VIDEO)!

[djkimmel]

Barking Piranhas! Scientists Explain Sounds Of Flesh-Eating Fish (VIDEO)

Scientists have known that piranhas, the sharp-toothed meat-eaters which Theodore Roosevelt called "the most ferocious fish in the world," produced sound, but they never knew what those sounds meant -- until now.

Sandie Millot, Pierre Vandewalle and Eric Parmentier from the University of Liège in Belgium set out to decipher the bark of the omnivorous red-bellied piranha.

Read complete story on Huffington Post.