After a look at some strange creatures, the narrator and camera take us to the Chaco forest, on the borders of Paraguay, Argentina, and Brazil, where a vampire bat lives, desmodus rotondus, attacking wildlife and domesticated creatures, killing small ones by draining all their blood and killing large ones by leaving a parasite in their bloodstream. Four inches long, with a 12-inch wingspread, we see it walk, approach a victim,... see more