Well 2 of the dogs will eat carrots the other 2 wont touch them. I know they chew rocks and sticks well actually they will chew whatever they find. Gracie always goes out and ginds big stones and brings them to me and does the same with sticks. one is a 2 yr old retriever and the other is a 3 yr old retriever so they are young. There teeth are actually really white just grinded down.