In Seoul City, the rate of households with a cat or dog was 17.9%, and the number of households with a companion animal was estimated to 3,590,000 in 2013. But, In Seoul City, more than 13,000 animals are abandoned every year. In this study, the occurrence, monthly population change, breed, sex, age, and health condition of abandoned dogs and cats in each district of Seoul City in 2013 w...