My almost 7mo old puppy is an aggressive chewer and can quickly get through a bully stick. I recommend the triple braided bully stick because it's more work for the jaw to gnaw through and lasts longer. I get them on Amazon in packs of 10 so they're more affordable.
We also just picked up Himalayan cheese that is suppose to be safe, enjoyable, and endure. It feels very hard so I imagine it's a good jaw workout. I was told that large chunks will not come off and it's completely digestible.
The other good chew for our guy has been antlers. If the antler is cut to expose more marrow, it's easier for the dog to scrape it out / less of a work-out. I've been getting these at a local pet shop rather than online so I can see the actual cut before buying.
So we can play tug and i wont be afraid that i'll hurt his jaws.
i just bought a cow bone and he didn't show much of an interest in it..
i bought a big colorful rope for him to tug with me and he liked it
now i'm looking for a nice snack that he can chew on for hours, something that wont turn into gummy in his belly(like i heard most of the industrialized bones does).
I've played tug with various Hooligans for many years and never needed any jaw strengthening exercises to play with them. I'm not saying I don't give them toys, food and treats that might strengthen their jaws, it's just I've never gone out of my way to do it.
i dont think he have a weak jaw, he's 1.6 years old and he's very active dog.
i just have to make my dog strong&fit because having a dog is like having a child you always want you're child to be like you so i want my dog to be fit and strong.
anyways he like's sports so we are meant for each other (That's the reason i chose GSD).