Background: The numbers of pet ownerships tend to increase worldwide.60 to 65 percent of USA citizens are keeping pets at home and 12-15 percent of them have allergic issues. Another research among the European children who have dog allergy increased up to 15.6 percent in 2006 while it was 8.7 percent in 1992. Also, the allergy symptoms usually come out as bronchial asthma. Methods: This study has conducted by hospital based cross sectional study and retrospective and descriptive study model. For the test (BioIC) to identify allergen-specific IgE in 154 patients, hypersensitive to cat, dog and horse allergy. Results: In our study, a total of 154 participants were involved with 1-63 aged (average age 18.7±14.6). By the result of the BioIC test, cat allergy, dog allergy, horse allergy was 114 (74.02%), 52(33.76%), 47(30.51%) respectively.The mean sensitivity rate for cat allergic children was 12.69AU where it indicates 7.61AU in cat allergic adults (p<0.01). The mean sensitivity rate for horse allergic children was 6.04AU where it indicates 2.27AU in horse allergic adults and 7.65AU in dog allergic children and 4.53AU in adults (p<0.04). Conclusions By the result of the allergen specific IgE test in serum, cat allergy, dog allergy, horse allergy was 114 (74.04%), 52 (33.76%), 47(30.51%) respectively. By the result of the allergen specific IgE test in serum, sensitivity rate of epithelial allergen to cat was strong positive where it indicates medium positive for horse and dog sensitive rate. Children has higher sensitivity rate of epithelial allergen than adults.