Why are some Rodents considered pets and others pests?

10% off First Month of Therapy on your schedule, from anywhere - for adults & teens. www.BetterHelp.com/WhoSmarted Better Help Are Hamsters, Gerbils, Rats & Mice all related? Why do Rodents eat their own poop? Which is the smartest Rodent? For free home activities sign-up at www.WhoSmarted.com See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.