I have a chihuahua/terrier and he has rash on his skin, is losing a lot of hair (idk if its the hot summer that makes them shed like crazy or what), also he sneezes a lot.
I am feeding him science diet. But since it is so expensive here in Hawaii I would like to switch to something a bit better than science diet.
Im afraid he may have a food allergy though but not sure what ingredient he may be allergic too?
any ideas, tips would be helpful too.

from my former question The girls (labs 8mo) are Hills perscription diet Z/d. my vet took them off from puppie food . Because the puupy food is making the large dogs grow too fast. not allowing the bones to grow properly. There was so many great responses I’m don’t know who to pick the best answer for the first part of this question