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If you've been mesmerized by these adorable pictures and found yourself thinking, "I want a rat!" or if you're just curious to learn more about these rodents, here are some amazing things you should know. According to the Rat Assistance and Teaching Society (yes, that exists! ), rats are smarter than dogs. These naturally intelligent creatures can acquire a wide range of abilities. They show up when called and even know their names. You can also teach a rat how to use a litter box. And they never forget old paths, even with their bad vision.