Dogs will choke on anything. You hear more stories about greenies because so many people give them and they are a new product. When I got Autumn the stories were all about rawhide chips. I've been giving her rawhide chips under supervision all her life. If she had a problem with them I wouldn't give them, but I don't blame the rawhide chips themselves. I don't feed greenies, but If I did these stories wouldn't scare me because I know my own dog and I give her things she won't swallow chunks of. This reminds me of Hilary Clinton wanting to ban hard candy, name me something that you eat that nobody has ever choked on-impossible to do.