Many people in the United States have pets as part of their lives. Most of the time, we see people with dogs and cats of every breed imaginable. In plenty of cases, people have rodents like guinea pigs, rats, mice, or hamsters as pets, or even reptiles like lizards and snakes. Meanwhile, some tenants may like to own exotic pets. While some are illegal to own in Maryland, be prepared to deal with pets you might not imagine being legal at first.