The Chinese Crested dogs are loving and very good with children and other animals.  If you have raised this dog to be sociable with people and other pets, it will be fine with a new pup.  The problem is that you must be very careful that the other dog is similar in nature and not too large.  The little Chinese Crested, if it is the hairless kind, has very fragile skin.  It is also used to a great deal of attention and might not like to share your affection very much.  If the other dog is too active, or too big, this one could get hurt.  Chinese Crested must be bathed often and oil must be rubbed on their skin.  It will be a lot of work to give this dog a great deal of care, and not neglect the other dog.  Think about your time constraints, and make sure that both dogs would need about the same activity level.  These Chinese Crested dogs don’t need a big yard, and house activity is fine for them.  They do need to walk, but they don’t need to roam.