Cat or dog allergy occurs in approximately 15 percent of the population. For those with asthma the percentage jumps even higher. Many think if they get a short-haired dog or cat they won't experience any problems. That's because the allergic protein comes from the pet's saliva and sweat glands. These allergens stick to the fur when the animal licks itself.
Cats lick themselves more than dogs.
This may account for the higher prevalence of cat allergy. The allergens then get carried in the air and land in our eyes, nose and sinuses. Crossing paths with a black cat may be unlucky for people with allergies. Many patients know what they're allergic to. However, for many, the symptoms don't occur immediately upon exposure.