I have 2 heeler/God only knows and they will and do chew on anything they can get their teeth on. Yes, on, it they can't get their teeth around it the chew on it. Sticks, rocks, house, shop, then know no bounds. They have chew toys and balls laying in the yard but will play with them only while I am out with them. I get on the 4 wheeler nearly every day and they run with me for 2 to 3 miles around the farm