Many of the wheat gluten and other proteins are routinely added to dog food. wheat free dog food is less common, since most of the major manufacturers and pet food Not enough Thurs, allergic wheat gluten, Meet the health needs of pets, especially puppies and adult dogs can be allergic to wheat.But how people seem to be allergic to wheat, the same dogs. So these days, many pet food companies have begun to recognize the need for more restrictions on diet, because in response to demand, such as wheat free dog food.