Animal Allergy Make an Appointment Refer a Patient Ask a Question Reviewed by Sanny Chan, MD, PhD (November 01, 2016) Exposure to animal dander (dead skin that is continually shed), animal urine and saliva can cause human allergic reactions to animals. Examples of allergy symptoms include itchy eyes, runny nose, and rash. These reactions can make asthma, rhinitis, and/or eczema (atopic dermatitis) symptoms worse in some people. Animal Types The dander, urine, and saliva of feathered or furry animals such as cats, dogs, birds, and rodents (hamsters, gerbils, mice etc.) can cause allergy symptoms. Exposure to other warm-blooded animals, such as horses or cattle, or to products made with feathers or down, also may cause allergy symptoms. A person can develop allergies with repeated exposure. More Animal Allergy Information Animal Allergy: FAQ Animal Allergy: No Hypo-Allergenic Cats or Dogs Animal Allergy: Allergies Worse in Winter Animal Allergy: Reduce Exposure View Allergy Home Cockroach Allergy Clinical Trials For more than 100 years, National Jewish Health has been committed to finding new treatments and cures for diseases. Search our clinical trials.