Photo: © Shutterstock Confusion reigns when it comes to how and why our furry friends make us sneeze and wheeze. Sakina S. Bajowala, MD, a member of the American Academy of Allergy, Asthma and Immunology, sets us straight. It's not the hair. The allergen is a protein that's found in saliva, urine, oil glands and dead skin cells, so a short-haired dog or hairless cat...