Does anyone have any experience/ advice on wether or not to purchase a puppy that is the runt of the litter? I have found what seems to be a reputable breeder in my area, she only has one puppy left who is the runt- she kept him behind because of his size and all of his litter mates have already been placed. He is going to the vet today for a check up, and she said she'd update me after that. She offers a 5 year health guarantee against congenital health defects, so maybe I shouldn't be concerned... I just don't want to go look at him and fall in love with him and make a bad descision! I just lost my 10 year old to cancer, and can't bear to put my self through losing another before his time!