I have whippets and they are fantastic family dogs. They don't need a huge amount of exercise and love to cuddle up on the couch with you. They are generally clean in the house, quiet, don't shed much and are very sociable. As already mentioned you do need to make sure you can recall the dog as they will run for miles after a hare or rabbit. Whereabouts is this dog? If your friend doesn't want it perhaps someone else close by would be interested.