There are no vaccines made to deal with food borne disease, so he's not at anymore risk than an adult dog. Don't worry about salmonella because dogs have the ability to shed it in their feces. Dogs and puppies can eat all sorts of nasty things with no problems, like when they bury a bone, just to dig up weeks later to gnaw on. Just make sure to do the switch slowly so they can get acclimated to the change. Also, bone and organ content can play a HUGE role in stool consistancy. So if your puppy gets diarrhea from the raw diet, it's most likely not that he's sick, but rather he's getting too much organ meat or not enough bone. Too much bone will make him constipated (stools will also be chalky looking), so it's a bit of a juggling act.

Also, vomiting when first starting the diet is common. I remember when wer first started Squeek on the diet I completely FREAKED out when she vomited up a piece of bone. I came to find out that this is normal. Her stomach was just ejecting an irritating object rather than trying to pass it. I also learned that you should make sure that the pieces of meat with bone should be large enough that the dog actually has to crunch it up before swallowing. Chicken quarters work well for my two dogs which weigh about 50lbs each. The quarters are too big for them to gulp, so they have to chew. Some people with larger dogs, give them whole chickens to munch on, and then when they've eaten a certain amount of the carcass they take it away from them to serve for another day. Which gets me to my next point. ALWAYS supervise meal times. Another trick to get them not to gulp their food is to hold onto the piece of meat while they crunch it.

Check out the Yahoo Group "Raw Feeding" for lots more info on feeding puppies raw food.