I never leave my dog unsupervised chewing anything. An alternative to raw hides I used was rolled cow cheeks from bestbullysticks.com. Completely digestible. I still take it away when it gets too small.
Had a bad experience with greenies. Never again.
Call me a sicko, but in the past when I have worried about if something has passed through, I've fed a few peanuts or a little corn. You will know when it's gone through their system. Lol.
I got a dog for my husband. It was a good trade.
LILLY and RUDY
In Memory of MADISON, The King 12/89-6/04
In Memory of JAKE, The Perfect Dog 9/01-11/02