My guys get the leg bones although I pay close attention when it starts to get smaller as I wouldnt put it past them to swallow a piece larger than they should.
I trim/scrape the meat off the ribs for them but I kinda feel the ribs are a bit too small...Wouldnt worry about sterilizing....dogs and their canine brethern have been doing this for the last 20,000 years.
Oh, cut off the hoofs. Piper & Paco puked them both up after 2 days.