bald spot

Seeking advice: First time owner of a fixed male, pacific bulldog. For over 6 months now (summer and winter) he has patches of hair loss. Vet said may have been a food allergy so we switched him to a raw pork diet, and he is also currently on 7.5 mg of Prednisone. It has been several months...

Have a 6 month English Bulldog and recently started getting 3 bald spots. One in his neck and 2 on his body. They are very small but nothing I've seen before. Wondering if y'all know what it could be. Has me alittle worried. Idk if it a food reaction but berly came up and has been eating Acana...

Hey guys! My bully, Milo, recently started developing these bald spots around his mouth and wrinkles and today I noticed that their is a waxy, yellowish/greenish substance on them. Does anyone know what this is or what I can use to treat it?? It's only around his face and he sometimes scratches...