"Skin sores" refers to any break or injury on the skin's surface that can appear as red, painful, or inflamed areas. These sores can happen due to various reasons such as infections, injuries, or underlying health conditions. Full definition
Like most canine diseases, there are multiple causes for dog skin sores on different areas of the body as outlined in the table below. (dog-health-guide.org)
Fleas: Do not use flea collars, first because their effectiveness is questionable and second, because flea collars can cause skin sores on long - haired cats due to the concentration of poison around the neck. (cap4pets.org)
Pythiosis is a condition where aquatic mold causes skin sores on a dogs legs. (dog-health-guide.org)