. >> reporter: bengal tigers, once owned by a paramilitary commander who allegedly used them to devour enemies. drug dealers were feeding them humans? >> yes. >> reporter: can i feed him? now, just steel bars separate me from the deadly 500 pound cats still adjusting to their new diet. is it beef? throw it over the top? animals so dangerous, so unpredictable, even this is apparently too close. and that's what makes what you're about to see even more unbelievable. one of the most unusual zookeepers you'll ever meet. getting right up close and very personal with some of the deadliest pets of colombia's drug lords. our journey into a strange, exotic world begins in the slums outside of kali, colombia, through winding dirt roads, finally to this giant steel gate. our driver rings the doorbell. revealing a world few people, let alone tv cameras, are ever allowed to see. a place teaming with more than 800 exotic animals. welcome to the wild kingdom of anna julia torrez, school principal turned animal rights crusader. >> the animals love her. it's the way they express their gratefulness to he