Brazilian ranchers are being attacked by an unknown creature. There's a wide range of suspects from jaguars to caimans, which animal is responsible?

Endangered ridley sea turtles are turning up dead along the beach in Costa Rica during the monthly arribada. But could the predator be from the land or sea or both?

Crocodiles in Australia’s Northern Territory are mysteriously showing up dead with no clear sign of trauma. What could be killing these incredible predators?

In the jungles of Luzon Province, locals believe a vampire-like evil spirit is picking off villagers. Could this be the work of a jungle predator?

Kangaroos are mysteriously being mauled in Victoria, Australia. With no big cats in this part of the world, has a long-extinct predator returned?

In Ecuador, a killer is loose in the wild as livestock are being mutilated and left uneaten. Could it be proof the mythical Andean Mountain Wolf exists?