Around 2.7 million animals are adopted from animal shelters each year, as of 2014. This number represents 1.4 million dogs and 1.3 million cats. Around 7.6 million animals enter animal shelters in the United States each year.
Around 35 percent of dogs and 37 percent of cats that enter shelters each year are adopted, and around 31 percent of dogs and 41 percent of cats that enter shelters each year are euthanized.
In the United States, there are an estimated 70 to 80 million dogs and 74 to 96 million cats living with owners. As many as 47 percent of all U.S. households have a dog, while as many as 37 percent of all households have a cat.