One of the fox cubs that visits our garden seems to have badly injured its right hind foot. It's hopping about taking care to not touch the paw to the ground, and the toes are curled under... the whole leg from the hock down appears to be floppy. It was still chasing frogs about though, and stopped for a drink out of the birdbath. It is still getting around ok up to a point.
I guess all I can do is observe and try to see if it gets any worse- looks like he could have broken something.