What Causes Dogs Skin Allergies

5 Causes of Your Dog’s Skin Allergies (and How to Treat It) Dog Allergies: Symptoms and Treatment – American Kennel Club Skin allergies in dogs - PDSA A Complete Guide to Dog Allergies: Causes, Treatments and Dog Allergies: Symptoms and Treatment – American Kennel Club Allergies in dogs Dogs are susceptible to allergies much like their human companions. Most allergies occur in dogs over 6 months old. A dog that is repeatedly exposed to a particular allergen becomes sensitized to it,.