由 Jennifer Yuchi Huang » 2007-06-12, 14:54
Like we humans, gene and nutrition are two major factors affecting your dog's growth. The fact that your dog was the smallest one among his littermates tells us that originally he might be the weakest one from unfavorable congenital (pre-birth) condition. He might be smaller in size but with good after-birth care he can still be a healthy happy dog. I am not worried about him being small as long as he is healthy. Always watch for his appetite, spirit, any vomiting/diarrhea. If he is underweight, certainly have your vet check him up and perform a fecal test to rule out the possibility of internal parasite.
Jennifer Huang