If a dog can chew for 30-45 minutes, endorphins get released in the brain allow the dog to feel relaxed and accomplished. It is the similar feeling we get when we go for a long run or knock out some difficult yard work. You feel tired, but good about how you spent your time.
Any chew can work, but you do want to invest in a chew that has a good amount of durability. Look for things like White Oak Pasture's sun-dried rawhide rolls as they are the most durable chew we have found on the market. You purchase them in any of our retail stores, or online by visiting http://shop.thewholedogmarket.com/rawhide.