We have a 3# little powder puff. She has a 2 1/2 foot ex-pen that she is place in when she is not supervised. She never goes outside. She is potty pad trained. She has learned that her time with us is on the bed and she is not to jump off. There she has all the love and attention. When she can't be on a 1 on 1, she is closed in a room or in her ex-pen. They are extremely fragile. Their x-rays look like fish bones--literally. Good luck.