Most of us picture animal shelters as dirty, crowded places where miserable and sick animals are housed. Animal activists have worked very hard to change the face of animal shelters, doing a good job to protect animals and find them new homes. If you're an animal lover, you'll want to take our quiz and learn all about the great work being done by animal shelters all over the United States.
How much do you know about how car engines work? And how much do you know about how the English language works? And what about how guns work? How much do you know? Lucky for you, HowStuffWorks is about more than providing great answers about how the world works. We are also here to bring joy to your day with fun quizzes, compelling photography and fascinating listicles. Some of our content is about how stuff works. Some is about how much you know about how stuff works. And some is just for fun! Because, well, did you know that having fun is an important part of how your brain works? Well, it is! So keep reading!