Yellow Girl is the smallest puppy, but only by .5 oz. So, not much smaller than her sisters, and Black Boy. They are the 4 small-er puppies. Not runts- just smaller genetically, trending still just around 25 lbs. Yellow is super smart, will be extremely easy to train, loyal and friendly. She will be a great companion puppy because of her willing attitude and love for life. She snuggles and calms down after her little play time.