Episode Detail: Vampire Bats; Croc Country: Nest Raiders; Alien Invasion; Wild Vet - National Geographic Explorer
A look at Nicaragua's vampire bat, which feasts on cattle and other animals---sometimes including humans. Also: Koorana Crocodile Farm, an Australian crocodile habitat that's preparing for a population explosion: 60 of its crocs are pregnant; Louisiana's solution for the nutria, an imported ratlike creature threatening native wildlife; and a profile of Ulf Tubessing, a veterinarian in northern Namibia who cares for wounded cheetahs.