They are very little and can get scared. Mice are very friendly. Once they get used to you they will happily sit on your hand to be petted. Rats are very smart. Some people have taught them tricks like coming to their name and walking on a tight rope.
Rats love to snuggle and be petted.
Lots of rats like to ride on their owner's shoulders. Others prefer pockets or purses. Address on the back. NO cedar or pine as they contain toxins and cause organ damage and respiratory disease. Unauthorized copying of any part constitutes a breach of copyright law.