A Houston man has surrendered dogs in the connection with the second largest dog fighting in U.S. history.

Demontt Allen was arrested in September.

According to the American Society for the Prevention of Cruelty to Animals (ASPCA), Allen and Sandy Brown, of Brownsville, Alabama, surrendered 16 pit bulls mix dogs. 

The dogs who were later transported to a temporary shelter in an undisclosed location where hundreds of other dogs seized in the raid are being cared for by the ASPCA.

"Fighting dogs live brutal lives and are viewed as solely a means to financial gain by their owners," said Tim Rickey, vice president of ASPCA Field Investigations and Response. "The dogs that have been surrendered have been spared a life of suffering. Thanks to the collaboration of numerous agencies involved in the case, these dogs have escaped a grim and violent end."

The dogs range in age from one to four years. Many of them appeared emaciated or thin, and some of them with scars and other conditions consistent with dog fighting. Others tested positive for heartworms and they will be treated by the ASPCA medical team. The ASPCA is also providing socialization and behavior enrichment for the dogs.

The dogs were seized from several properties throughout Alabama, Georgia and Mississippi on August 23 after a three-year investigation. 

A total of 13 people were arrested on felony dog fighting charges. If convicted, they could face up to five years in prison, as well as fines and restitution. Dog fighting is a felony in all 50 states and the District of Columbia.