Animal Planet Heroes: Hurricane Rescues tells the mostly overlooked story of how so many critters – abandoned in the crisis surrounding Hurricane Katrina – were eventually rescued by volunteers from the Humane Society and the Society for the Prevention of Cruelty to Animals. Set to air Aug. 29 at 8 p.m. ET/9 p.m. PT., the first anniversary of the disaster, the touching one-hour special features the heroic struggle to save more than 50,000 animals, plus the emotional reunions of pets and their owners.