To be fair, there's nothing short of hard metal that is can be considered completely indestructible—dogs can chew through just about anything, if they've got the time and dedication. We've heard plenty of horror stories about dogs chewing through sheetrock, chain link fencing, flooring, bricks, and in one memorable instance, a dog even chewed his way through the wall of a house just to get outside! Therefore, no bed is ever going to be 100% chew proof, because a solid slab of metal simply doesn't count as a bed.
The key to making a bed as chew proof as possible is to eliminate or shield common chewing targets (such as seams and corners), and use only the strongest fabrics for any spot the dog has access to. Our Chew Proof Armored™ beds were engineered with these principles in mind, utilizing a solid metal frame to shield the corners and edges of the bed and pull the heavy-duty center fabric tight so that there's no place for a chewer to get their teeth into it.