A couple of evacuees carry their dogs into the the George R. Brown Convention Center after Hurricane Harvey inundated the Texas Gulf coast, in Houston, Texas, on August 27, 2017. #

A vet holds a dog at a shelter in the George R. Brown Convention Center during the aftermath of Hurricane Harvey on August 28, 2017, in Houston. Rescue teams in boats, trucks and helicopters scrambled Monday to reach hundreds of Texans marooned on flooded streets in and around the city of Houston before monster storm Harvey returns. #

A cat wanders through debris left by the effects of Hurricane Harvey on August 28, 2017, in Rockport, Texas. A neighbor in the area took in the cat and provided food and water. #

Naomi Coto carries Simba on her shoulders as they evacuate their home after the area was inundated with flooding from Hurricane Harvey on August 27, 2017, in Houston. #

A pup belonging to evacuees sits in a crate at the Delco Center in east Austin on August 27, 2017. The Red Cross says, if needed, they are prepared to handle 350 people in the Delco Center. As of Sunday afternoon, a total of 24 dogs, 20 cats, and 5 birds were registered and volunteers from the Austin Animal Center said they could handle approximately 20 more animals depending on size. #

A woman holds her dog as she arrives to high ground after evacuating her home due to floods caused by Tropical Storm Harvey along Tidwell Road in east Houston on August 28, 2017. #

Sam Speights tries to hold back tears while holding his dogs and surveying the damage to his home in the wake of Hurricane Harvey on August 27, 2017, in Rockport, Texas. Speights tried to stay in his home during the storm but had to move to another shelter after he lost his roof and back wall. #

Andrew White helps a neighbor down a street after rescuing her from her home in his boat in the River Oaks neighborhood after it was inundated with flooding from Hurricane Harvey on August 27, 2017. #

Kenneth and Minnie Bice prepare to sleep outside the M.O. Campbell Red Cross shelter in Aldine, Texas, on August 28, 2017. Pets are not allowed inside and so the two are sleeping on the portico with their two dogs and a cat. #

A rescue helicopter hovers in the background as a woman and her poodle use an air mattress to float above floodwaters from Tropical Storm Harvey while waiting to be rescued from Scarsdale Boulevard in Houston on August 27, 2017. #

John and Cathy Cservek hold their dogs Lacy and Iggy while being rescued from their home as floodwaters from Tropical Storm Harvey rise on August 28, 2017, in Spring, Texas. #