Chewing is not a character flaw. It is one of the most normal things a dog does, and for most dogs it is the single easiest thing to reward. The problem is never that your dog chews. The problem is what your dog chews when nobody has taught him the difference.
Before you treat chewing as a training problem, rule out the medical side. Not all chewing is behavioral. Dental pain, gastrointestinal discomfort, allergies, and skin irritation all show up as chewing, and no amount of training fixes a dog who is chewing because something hurts. Stay on top of your dog's health first, then work the behavior.
Puppies are curious. Chewing is how they investigate the world, the same way a toddler puts everything in reach into his mouth. Around five to six months, when adult teeth are coming in, most owners notice the chewing get dramatically worse. That is normal, and it is also your best window to teach.
Puppies chew different things to find out what they can get away with. They are working out where they fit in your house. Do not waste that window.
Adult chewing usually traces back to boredom, a compulsive pattern, attention seeking, or plain enjoyment. The teaching job is the same as it is with a puppy, but the stakes are higher, because an adult dog can destroy a couch, a door frame, or something that will land him at the emergency vet.
Compulsive chewing is a dog obsessively working on himself or on one object. Interrupt it early and redirect into something else, a chew he is allowed to have, a walk, a training session. Compulsive patterns are very hard to change once they are established, which is exactly why puppy chewing should never be ignored. These habits escalate.
Destructive chewing is the dog who simply enjoys taking things apart, shredding and tearing. Most of these dogs are under-exercised. Energy that goes into a real walk, a swim, or a structured training session does not go into your baseboards. If your dog is quietly dismantling the house every time you leave, that is a specific, solvable pattern, and we walk through what it takes to leave a dog alone in the house without coming home to damage in our behavior library.
Attention chewing is the smartest and the most misread. Dogs learn quickly what gets a reaction. Some dogs will grab the one thing they know is off limits precisely because it brings you across the room. To that dog, any attention is good attention, and the scolding you meant as a correction lands as a reward. Manage the environment so the option is not available, and give him real attention when he has earned it.
One more pattern worth knowing: dogs commonly chew clothing when their owners are out, because your clothes smell like you. Laundry on the floor is a target, not an accident.
Put most of your energy into preventing chewing rather than responding to it. Chewing is far easier to manage the earlier you set the rules.
Chewing is probably your dog's favorite thing to do, and one of the easiest ways to make him happy. It does not need to be eliminated. It needs to be aimed. Keep the objects you care about out of reach, make sure he always has something appropriate that he is allowed to destroy, and be patient while the new habit sets. Do that consistently and you get to keep your house and your dog gets to keep his favorite hobby.
If chewing has already cost you furniture, doors, or a vet bill, call us at 480-595-6700. We have campuses in Scottsdale at Shea Boulevard by the 101 and in Cave Creek.