My 10 week old chihuahua puppy keeps scratching and biteing herself.There are no sign of fleas atall,and if there was i would be the 1st to get bitten!But as i said there isnt.So why is she scratching?The lady at the pet shop said it could be her dog food shes got an allergy to?Or maybe her shampoo?Any ideas anyone?

My 10 week old chihuahua puppy keeps scratching and biteing herself.There are no sign of fleas atall,and if there was i would be the 1st to get bitten!But as i said there isnt.So why is she scratching?The lady at the pet shop said it could be her dog food shes got an allergy to?Or maybe her shampoo?Any ideas anyone?

I have looked everywhere for small dog frontline and all the vets in town were out. My father in law did me a “favor” and found some and came over to our house while we were gone and gave it to her. The package said for dogs 89-132 lbs!! She is a very frail 10 year old chihuahua who also has allergies to fleas. I’m worried what will happen to her now. What should we do?