Monterion Dionte Davis, 19, was arrested Thursday after authorities - incensed by a graphic photo of the wounded dog - launched an investigation.
Monroe County Sheriff John Cary Bittick said,
"It is without a doubt the worst case of animal cruelty I've ever seen, and I've been sheriff for 29 years."
The Georgia teen nearly decapitated his dog by wrapping an electrical cord around the helpless animal's neck and leaving it to die in the woods.
The mixed-breed dog was nearly dead when the animal rescue group Save-A-Pet found the wounded animal on July 7 and rushed it to a veterinary hospital.
Davis faces up to 10 years in prison if convicted.