The owners of a Kailua restaurant are matching the Hawaiian Humane Society’s reward for information leading to the arrest and conviction of the person or persons who attacked a dog named Chaco, leaving him unconscious, the Humane Society announced Thursday.

Rick and Jessie Kiakona, owners of Boots & Kimo’s Homestyle Kitchen, matched the $2,000 reward, upping the total to $4,000.

Chaco, a pitbull mix, was found lying unresponsive on the ground near Kualoa Ranch with several deep cuts to his head and body. They were “so deep that his skull and other bones were crushed in those areas,” the Humane Society’s news release said.

Chaco recovered from the life-threatening wounds. He was reunited with his owner, who had not see the dog in more than a year. The owner surrendered the dog to the Humane Society.

Another family adopted Chaco and renamed him Survivor.

Anyone with information is asked to call the Hawaiian Humane Society at 356-2250. Tips will remain anonymous.