I feed pre-made raw, and really like it....I've been feeding about 2+ years now...? My kiddos have never had a tummy issue from the raw.
Since you are giving the RMBs once in a while, I'd recommend taking off the fat. While fat is flavorful, he will likely still be just as attracted to the bone without the fat. And, it's true that yorkies do have a certain increased chance of pancreatitis.
With chicken, it is good to freeze the bones, then thaw them again - as this helps with pathogens. Also, it is fine to feed kibble and raw together - the stomach knows how to digest multiple food substances at the same time.
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~ °¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |