Our expert says:
Most common causes in puppies: Fleas, Sarcoptic mange. Even if you do not see fleas treat all your dogs with a good flea product. You can buy Aludex/Amitix from a Vetshop and dip your dog weekly for 3-4 weeks. This will sort out the mange. Mange is sometimes difficult to diagnose so best to rule this out as a diagnoses.
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