My dog started shedding a lot of her hair and is now getting bald spots on back of rear legd, chest and some now her back. I thought it was scratching because of fleas until she started getting them on her back. I figured we were gonna have a flea problem beacuse of the next door neighber not taking care of their dog. My firend said its fleas but i gave her a bath and could not find any. My other friend said its her genes beacuse shes blue. His blue/fawn female had that problem like 3 years ago and said the vet gave her a shot. What could be causing this, and what are diiferent ways to take care of it?