Chelus fimbriata
The matamata turtle looks like a piece of dead leaf and mud, with a rough shell, a tubular snout, and skin flaps that camouflage it among streambed debris. It walks along the bottom rather than swimming and catches fish by lunging its jaws open so fast that prey is sucked in with the water. Little is known about its breeding, but captive animals have lived to 40, and habitat loss and collection for the pet trade are its main pressures.