Pet Allergy FAQ  How many people are allergic to pets?
According to the Asthma and Allergy Foundation of America,
approximately 10 million people are allergic to cat dander, the
most common pet allergen, and 15-30% of allergy sufferers have
allergic reactions to either cats or dogs. Cat allergies are
about two times as common as dog allergies. The Humane Society
estimates that about two million Americans live with cats to
which they're allergic.  What causes pet allergy?  It's the job
of your immune system to fight off invaders like bacteria and
viruses, but sometimes your immune system mistakes harmless
proteins for a dangerous invaders. You experience allergy
symptoms when your immune system becomes hypersensitive to
harmless proteins - and when these proteins cause an allergic
reaction, they are known as allergens. In the case of pet
allergy, your immune system reacts to proteins found in pet
dander (dead skin), saliva, and urine.  Pet Allergy Animal
Dander What are the symptoms of pet allergy?  The aller