As far as dogs or cats being treated at the clinic for improperly digesting bones it very rarely happened actually. After working at the vet clinic for 10 years, I can not recall of an instance. These things happen and you can not be too careful but to deny a pet the pureness of bones is unjust. It is the same as not crossing the road because a car might hit you. Be careful and let your pet enjoy.
Pasteurization leads to arthritis.
The makers of raw meat diets often suggest a meal plan that contains whole, raw dairy. Yogurt is valuable because it provides probiotics to the diet. I think dairy given as a treat is fine once and awhile. Again, it is giving a variety of foods that acheives balance. Pasteurization as mentioned above kills bacteria.