Always adopt from a shelter and never, ever buy your pets. Even if you want a purebred dog, there is a strong possibility that you'll find the breed you want at the shelter: The Humane Society of the United States estimates 25 percent of all adoptable pets in shelters are purebred. There is also a proliferation of rescue groups online for all breeds to help you find the perfect animal. Bonus tip: Shelters can always use old towels to give animals a warm place to sleep or to dry them off after bathing. So, when you replace your bath towels, give them to your local shelter.