I have 2 Labs who love tug-o-war and are really avid chewers (most 'durable' chew toys don't last more than a few minutes). I offered the bumi for them to tug on and it worked great for that. However, when one of them got hold of it and started chewing on one end, within 3 miuutes, it started to fall apart.

I am sending it back for a replacement and will use the new one just for tugging and not chewing.