We were just having a discussion about greenies on the Border Collie Rescue and here is what a rescue president said about them:

"I've read a bunch of articles about this before, but I missed the CNN piece. My feeling is that if these things really were killing that many dogs they would have been pulled off the market. Regardless of if they're popular, the company wouldn't be able to afford the lawsuits that would be flying at it.

I've never had trouble with my dogs or cats having greenies, though they don't get them often since they're expensive and my dogs need something that will last a little longer. My boys also chew them up pretty well, at least from what I've seen.

Think about how many dogs die from choking on rawhides or from an intenstinal obstruction caused by rawhide. Nothing that we give our dogs to chew on and swallow is 100% safe. There's always a chance that they'll choke or have some other problem. So it's up to us to supervise and pick the right things for each dog to be chewing on."