" CAUTION: As with any edible product, monitor your dog to ensure the treat is adequately chewed. Gulping any item can be harmful or even fatal to a dog."
I think Breeze hit the nail on the head with this quote. It makes sense that anything that isn't chewed properly could cause harm.
Baxter loves greenies. I think I will continue to give them to him, but not as often (he gets 1 each day).
As for substituting greenies for dental care, I don't think that is anyone's intension here. It's not mine. Baxter gets his teeth brushed too. Dogs like to chew-that's what the greenies are all about.