You didn't ask for this reply, but I'm going to offer unsolicited information. LOL
When you get bones, get ones that haven't been smoked. The smoked bones are brittle and break apart. The shards can get up in their gums and cause abscesses...
I haven't bought a smoked knuckle or femur bone since the 2004 master national where I believe one caused an abscess in the jaw and behind the eye of one of my best dogs, preventing him from finishing the event (in my opinion! He was on pain meds).
I get the plain sterilized bones. The dogs enjoy them just as much and they last forever.
Just throwin' it out there.
And if you need a distraction, you can stuff things in the sterilized bones (like peanut butter).