There is no such thing as an indestructible dog toy for an aggressive chewer. Unless it’s made out of lead.
Dogs can have a strong bite force—between 200 to 700 pounds per square inch (PSI)—and an aggressive chewer with a strong biting or chewing instinct will work on a toy-destruction project endlessly. Maybe not all at once, but day after day after day.
Looking for an indestructible stuffed toy? Forget it. Dog toys with parts that stick out or are stuffed and fluffy are especially vulnerable—any kind of adorable doll. They almost always have legs and a head that a dog can grab with his teeth and pull. These toys often also have a squeaker inside. Dogs love to chew or eat stuffing, and a squeaker is even more fun because it makes noise. (It’s potentially dangerous, too, because the squeaker could get stuck in their throat or on a tooth or swallowed.) And if the doll has hair too—well, that’s even more fun.
So, you have to constantly buy new toys and clean up all of the pieces.
The toys that come closest to being indestructible are hard rubber dog toys. The leader among these rubber dog toys is the original Kong, a bell-shaped piece of rubber that costs $8 or $9 and can be stuffed with something yummy. The original Kongs aren’t fun to look at, but dogs like them, and all types or hard rubber Kong toys will last your dog a long time.
Don’t be fooled. Kevlar—that synthetic material that’s said to be stronger than steel and is used in protective vests—is used to make durable dog toys. But, yes, your dog can chew through Kevlar and swallow strands of the fiber, which is not good. If you really need an indestructible dog toy, choose hard rubber Kongs, which are available almost anywhere dog toys are sold.