hi i dont know if my dog has either color dilution alopecia where she is a blue chihuahua or if its fleas or if its a thyroid prob.I was wondering on thyroid because she is 10 months old but she is the only overweight of my dogs but she is losing some hair and she is the only one with like a flat back.

Dog is sick - Go to vet -Pay large bill after - Go to better breeder next time