They are the perfect pet for people who do not have a lot of space, they make little noise, they do not cost a lot to feed, and are inexpensive to purchase.
Some people even say that they are the closest pets to dogs.
They are very clean animals and DO NOT carry disease. They are affectionate and intellegent, they can come when you call thier name, learn tricks etc. They do not take up a lot of space, unless you become addicted as I have. My rats love to ride on a shoulder, or in a pocket. They love to play and you can make a rat toy out of just about anything.