Dog hair condition

Hair on dogs back becoming very thin, what could be cause..??

It could be an allergy, mange or a hormonal issue.
   
See the vet for this as it is the symptom of a bigger problem.

Dear Friend,
   
if your dog have hair problem then you can use dog shampoo. please visit the following link where u can find solution for the same problem.
   
http://www.otcvetmeds.com/dog-grooming-shampoo/glossy-aloe-shampoo.html
   
thanks