The phrase "fewer allergies" means that there are not as many allergic reactions, or people are experiencing less allergy symptoms than before. Full definition
However, certain dogs cause fewer allergy symptoms than others. (petsway.com)
Researchers found infants with lower levels of cortisol, an adrenal hormone released in response to stress, developed fewer allergies than other infants. (functionalhealthnews.com)
Many who feed their dogs a raw food diet claim their dogs are healthier, happier, and suffer from fewer allergies or illnesses than other dogs. (dogfoodinsider.com)