In something straight out of a childhood nightmare, a swarm of piranhas has been caught on camera munching on a caiman carcass. The video, posted to Instagram by the @natureismetal account, shows ...

For the Indigenous peoples of Colombia’s lower Caquetá River, the lakes of Puerto Caimán form a huge maloca, a cultural and spiritual hub.This watery habitat is home to the black caiman ...

But for the mollusk eaters, the birth of the booming river eco-system meant certain death. Mollusk populations went way down as the river evolved. Today, even the hyper-diverse Amazon only has three ...

Northern caiman lizards will eat crawfish, freshwater clams, and even Amazon river turtles. Caiman lizards have incredibly powerful jaws with short, round teeth.