Plot Synopsis

INVADERS tells the stories of creatures that adapted to their new surroundings, allowing them to thrive in new areas and create problems while they try to dominate their new environment. Episodes include: "Cocaine Hippos," highlighting drug baron Pablo Escobar's prized pets, which have claimed territory deep in Colombia's countryside -- and they're not giving it up without a fight; "Giant Swamp Rats," focusing on the biologists who are fighting back against the invasive nutria and its infestation of America's wetlands; and "Feral Pig Plague," putting the spotlight on Australia's wild hogs, outnumbering the human population and destroying crops and livesto