I read this on the web on thought I would share
Tami
YOGURT---The miracle drug for puppies. Plain yogurt can literally save your puppy's life. We recommend to everyone that takes a new puppy home to make sure you have a supply of plain yogurt on hand for several days. This should be fed to your puppy a couple of times a day along with it's normal diet. Please check the label and make sure it has the acidophilus culture and not the aspartame. ASPARTAME IS PURE POISON for humans and should not be fed to small dogs.
Stress occurs when you take a new puppy out of it's natural environment. This means that when you purchase a puppy and take it home, you are creating a stressful situation for this puppy. Stress kills off the good bacteria in the G.I. tract. When anything occurs out of the ordinary, it is stressful. Wormings, shots, shipping, riding---all create stress for small animals. Plain yogurt culture puts the good bacteria back into the system so you will have a healthy puppy. So feed them all they want for the first couple of days until they adjust to the new environment. Yogurt can be force fed with a syringe in situations where your puppy has stopped eating and shows signs of being hypoglycemic.