do you notice him nibbling his legs at all . This can be stress induced grooming an old dog of mine did it but made his front paws sore . or it could be diet causing it, I know both our labs are molting at the mo its a nightmare a diet difficient in all it needs of a food allergy to something in his food could do it , or im not sure on this but like people get allopescia could a dog get the same do you think ?? keep an eye on it and if it seems to get worse or it bothers him maybe have him looked at by the vet .

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