Well, I guess I'll just stick with the bully sticks then.
His mouth isn't big enough to chew on a tennis ball except for the teeth more to the front.
The trouble with determining the cause of a broken tooth is that often people don't know when it happened so the dentists and regular vets say that anything hard can break teeth.
He doesn't play with rocks or chew on wood.
Chews on bullies and plush toys.
Maybe it's the fence biting or those accidents, maybe hitting a landscape block or a tree while running playing tug, the cloth or rope is in his mouth and then he slams into something hard with something between his chewing teeth.
That's how the canine and one previously broken carnassial broke further down.
Thank you,
Terri