Allergy to animals is very common and can make other allergies worse.

Pets are a major source of allergens. Although the allergens are not in the animals’ fur (contrary to what many people think), their coats can be very good "transporters" of allergens.

The allergen is often refered to as "dander".

Animal danders are the most common nonseasonal, inhaled allergen. Animal danders may induce hay fever and asthma symptoms, or they may produce skin reactions such as urticaria.