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In order to assess the prevalence of skin diseases in dogs encountered in a first opinion university small animal clinic, 1299 Iranian domestic dogs presented from September 2007 through March 2011 to the Ferdowsi University of Mashhad Veterinary Teaching Hospital, were examined. Dermatological disorders were noted in 17.00 % (221/1299) of all the dogs examined. Pruritus was the most common presenting sign, accounting for 25.35 % of the dermatological consultations. It was followed by erythema, maculo-papular-pustular eruptions (16.97%), erosive or ulcerative lesions (16.74%), scaling or crusting (13.02%), alopecia (8.84%) and visible ectoparasites (7.44%). The most common primary final diagnoses were superficial pyoderma, cutaneous manifestations of canine leishmaniasis, flea infestation and allergy, tick infestation, atopic dermatitis, scabies, unspecified dermatoses, otitis, furunculosis and food allergy. There were no apparent age or sex predilections for dermatological disease as a whole. Spitz (odds ratio = 3.38; p = 0.001), Terriers (odds ratio = 2.52; p < 0.001) and German Shepherds (odds ratio = 1.90; p = 0.001) appeared to be at increased risk for dermatological disease. In addition, Khorasani large cross breed dogs (odds ratio = 0.36; p = 0.003) and mixed breed dogs (odds ratio = 0.33; p < 0.001) showed decreased risk for dermatological conditions. To the best of our knowledge, this is the first survey study on canine dermatological conditions carried out in Iran