went ahead and set shop=pet, wikipedia says pets "and/or" pet supplies and actually preambles with food/supplies (toys? cages?) and "optionally" pets themselves.  Yes it could be helpful that it distinguishes one over the other.  perhaps sells:food=only or something...  Then again most shops that sells pets also sells food for them, maybe perhaps excepting puppy farms and the like.

There are already too many other pet food shops marked as shop=pet so just doing this in uniformity.  Locally, "Poudre Pet feed and supply" has the same issue - and weirdly enough they also occasionally sell chicks which aren't usually pets...