Some common reasons are allergies (often food), skin infection and acne which can develop into a staff infection. You should have your vet take a quick look to see what it could be and what you can do.
www.dogfoodanalysis.com
www.bornfreeusa.org
www.terrificpets.com
www.dogfoodanalysis.com
www.bornfreeusa.org
www.terrificpets.com
