Bayou went missing in Los Angeles three years ago.
He was recently found in Florida.
The dog had been taken to a shelter, where a scan turned up a microchip ID.
Hough had moved, but he was tracked down by a volunteer for Missing Pet Partnership.
Hough expects his pit bull to arrive home Sunday.
Hough doesn't know how Bayou ended up in Florida.
But Hough tells the LA Times he suspects the dog was taken when an ex-roommate moved out.