My ECS used to grab a rock on his way through the landscaping, he did it so quickly and smoothly that you didn’t realize it until he started chewing on it. As far as I know, he never swallowed any, but he could have. It really just took a lot of diligence to keep him from getting any. It wasn’t too long and he stopped doing it. I think as was said above that they like to have something in their mouth. Good luck, Dave
