Jan Ometak, 26, from Princess Avenue, Hereford, is accused of attacking the resident in the village of Lyonshall, near Hereford, in the early hours of Monday morning.
Doug Morgan, 75, and his wife Valerie were getting ready for bed when a maniac dived through a lounge window left open because of the heatwave.
A fierce tussle broke out as the intruder punched the OAP — then bit him repeatedly. He chewed off Doug’s thumb and ATE it, police said.
He is also thought to have ripped off the villager’s left nipple with his teeth — and tore chunks from his face and upper body.
Cops who arrived at the scene had to drag the nut off blood-covered Doug, who had passed out with shock.
The source added: “There was blood on the walls and this guy was just laughing like a maniac.”
Cops last night confirmed Doug had suffered serious bite wounds, had lost a thumb and chunks of flesh from his face and body.
“Mr Morgan put up a brave fight but was set about in a cannibalistic way. His thumb could not be sewn back on because the attacker had literally eaten it.”
Source