I just assume they are allergic to corn. She has however eaten birdseed dropped from the tree feeders and there are corn kernels in that.
I had a vet that only fed his dog once a day...he was the vet I didn't like and changed vets because of him. My regular vet retired and sold his practice. I'll relax about the feeding though...they do get treats when we are in the front and come in or when we've gone somewhere and come back (including walking to the mailbox.) LOL!!
Love All Life, Thank You For Posting! :)