Been feeding my two raw for a couple of weeks now. I agree that speed eating is probably the problem. Last week Murphy threw up a chicken leg whole!!! I had feed the pair of them together in the garden and I think Murphy had panicked and eaten too quick so Racer couldn't get it.
They normally eat together fine, but now any bones that take a while to eat I seperate them and touch wood no more chicken on the rug.
Why is that, the only carpet downstairs is one small rug and that's where he throws up!
Sue