If you have ever wondered what a really durable toy for a dog is, look no further. The most durable toy I have ever seen, is actually a horse toy, but dogs play with them too.
Horses get a big kick (no pun intended) out of playing with these, and I have seen our pit bull playing with one as well. They can be bought online. They are almost indestructible!
Here is a link where you can get one, if your dog is a big chewer and chews up every toy he has.
Link: https://www.valleyvet.com/ct_detail.html?pgguid=C25EEF5A-C5F5-49C3-AF8C-4FDD930663CB