Rawhides seem to get gobbled and um, purged, in my experience.
The bones have been a big hit here. My vet even noticed the difference in Dixie's teeth, and told us to keep it up. She has a dental scheduled from next Tuesday, along with a minor surgery, and he figures that if we keep up the bones, she probably won't need another one.
There's been lots of fun with beef feet bones from the Asian grocery. I just don't give the old ones marrow.(earned that from you, Blanche.) Rich treats are guaranteed to give Belle the squirts, and Beau gets fat if the wind direction changes.
And flossie/kneecap time is this bizarrre silence punctuated by the sounds of slurping and smacking.
Mine get marrow bones--there just isn't any marrow in them!