How can we stop my dog chewing his leg?

My dog has a nervous habit - like biting his nails, but he chews his own leg. We're getting quite concerned - we sent him to the kennels for two weks and when we came back it was quite raw, and because he keeps chewing on it, it's not getting better. …

    How can we stop my dog chewing his leg?

    My dog has a nervous habit - like biting his nails, but he chews his own leg. We're getting quite concerned - we sent him to the kennels for two weks and when we came back it was quite raw, and because he keeps chewing on it, it's not getting better. …...
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