Austin Brock holdshis cat Tutti, shortly after the animal was retrieved from the rubble of Brock's home in Moore on Tuesday. (Photo by Brennan Linsley/Associated Press)

Brittany Brown rushes to get aid after finding her grandmother's cat “Kitty” which was buried in tornado rubble for two days. (Photo by Charlie Riedel/Associated Press)

Stephen Peterson's dog, Chewbacca, sniffs the hand of Oklahoma City police Sgt. Shawn Byrne after Byrne gave Peterson a pair of gloves along on Tuesday. Peterson was walking from his home in Moore with a wagon of things he was able to salvage. (Photo by Nate Billings/The Oklahoman)

Injured horses huddle together in Oklahoma City on Monday. (Photo by Chris Landsberger/The Oklahoman)

Rescuers search for lost animals after tornadoes hit Shawnee, Oklahoma on Monday. (Photo by Marcus DiPaola/Xinhua via Zuma Press/MCT)

A dog scavenges for food in Moore on Tuesday. (Photo by Brennan Linsley/Associated Press)

A member of Nebraska Task Force-1 and his search dog look through the remains of a in Moore on Tuesday. (Photo by Brad Loper/The Dallas Morning News)

Maeghan Hadley, of One Day Ranch pet rescue, checks over a kitten pulled from under the rubble of a mobile home destroyed by Sunday's tornado in the Steelman Estates Mobile Home Park, near Shawnee. (Photo by Sue Ogrocki/Associated Press)

On Tuesday, Sean Xuereb recovers a dog from the rubble of a home in Moore. (Photo by Scott Olson/Getty Images)

Alli Christian, left, returns Jessica Wilkinson's dog Bella to her after finding the pet amid the wreckage of Wilkinson's home shortly after a tornado struck in Norman on Sunday. (Photo by Steve Sisney/The Oklahoman)

Kay Taylor stands with her dog Bailey in front of her destroyed house in Oklahoma City on Monday. (Photo by Chris Landsberger/The Oklahoman)