I have heard rumors about haw bad Greenies were. Google "Greenies bad for dogs" and see what comes up! I was kinda surprised...I mean...Greenies seemed so popular...sold at all pet places.
But there indigestable and a few other things.
SO DON"T GIVE YOUR DOGS GREENIES!
Here is one of the many sites:
http://www.snopes.com/critters/crusader/greenies.asp