Hi, I have 2 Bull Mastiffs, a 15 month old male who has been raised on nothing but kibble since I brought him home and a 4.5 month old female that we just recently brought home. I really want to switch over to raw but other than chicken quarters I don't know what to feed them. I don't know if I can give the puppy a chicken quarter at 4.5 months or is she too young to chew that bone up? I also am not sure how much to feed the 15 month old, Mack. He is about 105 pounds right now, a little light compared to his dad and mom who where 135 and 120. If anyone could give me some advice I would really appreciate it.