Ooh at this point I hope it is a flea allergy rather than a food allergy. Food allergy would be harder to manage with two dogs... just switch them both I guess. We'll see.
Do you think someone abandoned him, or is he just lost?
I had forgotten about the two dog angle; dogs don't really pay attention to separate food bowls!
Our younger cat, Annie, used to leave Louise's canned cat food alone. Annie was rescued by the vets up the street and was raised on dry food. However, since I have started adding a nutriental supplement to Louise's food, Annie keeps wanting to eat it, and there is hissing and growling galore when Annie approaches Louise's food bowl!