Each year, approximately 7.6 million companion animals enter animal shelters nationwide (ASPCA). Of those, approximately 3.9 million are dogs and 3.4 million are cats. About 2.7 million shelter animals are adopted each year (1.4 million dogs and 1.3 million cats). Meanwhile, about 649,000 animals who enter shelters as strays are returned to their owners (542,000 dogs and 100,000 cats). Compared to these lucky cats and dogs finding their families to take them home, many shelter animals face an uncertain future. It is estimated that 2.7 million cats and dogs are euthanized in the US every year. Given the differences in outcomes for shelter animals, we can analyze the factors that make some cats and dogs more likely to get adopted.