Ribs of Eric "the thinnest dog" can clearly be seen poking through fur (Image: RSPCA)Eric 's nails looking overgrown and curled over (Image: RSPCA)Eric had to be wrapped in metallic thermal blankets to keep him warm when he collapsed moments after being rescued.

The couple who first raised the alarm over the ‘Croydon cat killer’ have vowed to continue the search for a human culprit, and animal rights supporters have started a petition which demands the police reopen the investigation and tells officers: “Stop trying to turn foxes into evil creatures when they’re not.