I feed a frozen premade raw called BRAVO! and I see bone fragments all the time. They are super small and will not hurt your pup. Actually I've fed whole raw chicken thighs as well bones and all and my little guys crunched those bones right up and gobbled em up. They LOVE them but it's a but messy so I stick to the clean premade frozen raw.
Stella and Chewy's is a GREAT brand, I gave my boys their freeze dried raw for mid day snacks before but it gave them red eye gunk so I don't give it anymore.
Viv