Bones and Chews: What’s Actually Safe, and What Sends Dogs to Surgery

Every dog needs to chew. It’s a genuine behavioural need, not an indulgence — chewing lowers arousal, occupies a dog for longer than almost anything else, and does real work for dental health.

Which is why the chew aisle is enormous, and why a good proportion of what’s in it will either fracture your dog’s teeth or end up being removed from his intestine.

Working out which is which is worth twenty minutes, because the failure modes here are expensive.

The three separate risks

Different products fail in different ways, and lumping them together is why the advice gets confused.

Tooth fracture. Anything hard enough to resist a determined dog can break a tooth. The upper carnassial — the big premolar towards the back — is the usual casualty, and a slab fracture of it is a common and costly injury.

Obstruction. Things that get swallowed whole, or in pieces too large to pass. This is the one that becomes abdominal surgery.

Digestive upset. Rich, fatty chews that are perfectly safe mechanically and produce two days of diarrhoea. This is the mildest category and the most common, and it’s where sensible everyday care actually helps — a dog on daily Probiotics for Dogs with a settled routine copes better with a fatty chew than one whose gut is already marginal. It won’t stop an obstruction and it won’t mend a tooth.

Knowing which risk a given chew carries tells you how to use it.

The ones vets see the most problems with

Cooked bones of any kind. Never safe. Cooking makes bone brittle, so it splinters into sharp fragments. Chicken carcasses, chop bones, roast leftovers. A routine cause of emergency surgery and of perforated intestine, which is far worse.

Weight-bearing raw bones. Marrow bones, knuckle bones, anything from the leg of a large animal. These are dense enough to break teeth reliably. The classic injury is a dog who’s had a marrow bone as a treat and needs a several-hundred-pound extraction a fortnight later.

Antlers. Extremely popular and extremely hard. Plenty of vets would rather you didn’t. They don’t splinter much, which is the selling point, and they fracture teeth.

Hooves. Split into sharp shards along their length.

Nylon and hard plastic bones. Marketed as indestructible, which is precisely the problem — anything a dog cannot dent will dent the dog.

Rawhide. Divisive. It softens and swells as it’s chewed, and dogs who tear off and swallow large pieces can obstruct. Cheap imported rawhide also carries processing concerns. Some vets are relaxed about it, many aren’t.

Tennis balls, chewed rather than fetched. The abrasive surface wears teeth down flat over months, and the two-halves-swallowed problem is real in larger dogs.

Sticks. Free, available everywhere, and responsible for a steady stream of mouth and throat injuries.

The ones generally considered safer

No chew is risk-free. These carry lower risk for most dogs.

Rubber chew toys designed for the purpose, in the right size and firmness. Stuffable ones are better still because they occupy longer.

Raw non-weight-bearing bones, supervised — chicken wings and necks, rabbit, lamb ribs. Softer, more edible, considerably kinder to teeth than a marrow bone. Never cooked, always supervised, and not for dogs who bolt.

Dental chews carrying veterinary dental approval. Genuinely tested for effect. Count the calories, because most are substantial.

Fish skin chews. Softer, well tolerated, and lower in fat than most.

Yak or Himalayan cheese chews. Hard, so not for aggressive chewers, but they soften with saliva and the last stub can be microwaved into a puff.

Root chews made from coffee wood or similar.

Stuffed and frozen Kongs, using his own food. Free if the food comes out of his ration, and among the best options for occupying an anxious dog.

Lickimats, which aren’t chewing but do the same job of lowering arousal.

Fat, which nobody checks

The overlooked issue with the “safe” options.

Pizzles, tripe sticks, many hide chews and most dental sticks are high in fat and calories. A large dog getting a chew a day can easily be taking on a tenth of his daily calories that way, and nobody counts it.

For a dog who’s overweight, that matters. For a dog who’s had pancreatitis, it’s genuinely dangerous — a single fatty chew can trigger a relapse.

Read the analytical constituents on the packet. If it isn’t stated, that tells you something too.

Lower-fat options: fish skin, plain yak chews, root chews, carrot, and a Kong stuffed with his own food.

Size and supervision

Bigger than his mouth. The rule is that a chew should be too large to swallow whole for the whole time he has it, which means throwing away the last stub rather than letting him work at it. That stub is the piece that causes obstructions.

Supervise anything new, always, and anything edible, always. A dog left alone with a chew is a dog who might swallow it in one.

Take it away at the right point. When it’s small enough to fit entirely in his mouth, it’s finished.

Twenty minutes at a time, not all afternoon. Long sessions cause more tooth wear and more gastrointestinal upset.

Never with more than one dog together. Chews are among the most guarded items there are, and competition makes dogs swallow things quickly.

Know your own dog

The same chew is fine for one dog and dangerous for another, and this is the part generic advice can’t cover.

Gulpers. Dogs who swallow rather than chew. Labradors and spaniels are notorious. Very few edible chews are safe for these dogs, and a rubber toy they can’t dismantle is a better answer.

Power chewers. Dogs who destroy everything. They need durable rubber rather than hard bone, because a dog who can break a nylon bone can break a tooth.

Delicate chewers, who work at something gently for an hour. Most options are fine.

Puppies, whose teeth are softer and who are losing them anyway between three and six months. Softer options only, and never anything hard.

Older dogs, whose teeth are already worn and often already damaged. Hard chews are a poor idea at twelve.

Dogs with any dental disease. Get the mouth sorted first — chewing on an already-compromised tooth is how it fractures.

The signs something has gone wrong

Tooth fracture. Chewing on one side, dropping food, pawing at the mouth, reluctance to be touched around the face, or a visible pink dot on the tooth surface — that’s exposed pulp and it’s painful.

Obstruction. Repeated vomiting, no appetite, no stools, straining without producing, a painful abdomen, lethargy. This is a same-day emergency and it doesn’t resolve on its own.

Something stuck in the mouth or throat. Pawing, gagging, drooling, distress.

Digestive upset. Loose stools or vomiting for a day or two after a rich chew. The mild version, and it usually passes.

If you know he’s swallowed something substantial and it hasn’t appeared within two days, ring the vet rather than waiting.

Guarding, which is a chew problem too

Worth mentioning because chews cause more resource guarding than food bowls do.

They’re high value, they last a long time, and they’re often given and then taken away — which teaches a dog that a chew is temporary and worth protecting.

Never take one directly. Trade for something better, every time, and give the better thing generously. A dog who has been paid well fifty times for handing things over doesn’t guard.

If growling has already started, stop taking things directly and get help from a qualified behaviourist. Escalating over a pizzle is how people get bitten, and it’s very fixable when handled properly.

Cost, and what a mistake actually runs to

Worth knowing, because it reframes how much you’d spend avoiding one.

A slab fracture of an upper carnassial needs either extraction or root canal treatment. Extraction of a large multi-rooted tooth under general anaesthetic, with X-rays, generally runs to several hundred pounds. Referral for root canal costs more.

An intestinal obstruction means abdominal surgery, several days of hospitalisation, and a bill in the low thousands. Out of hours adds to it substantially. If there’s perforation or a section of intestine needs removing, more again.

A day or two of diarrhoea costs nothing except your patience and some kitchen roll.

Set against that, the difference in price between an antler and a decent rubber toy is trivial, and the rubber toy lasts years. The economics of chews are not what the shelf price suggests.

Also worth checking whether your insurance covers dental work. Many policies exclude it, or require evidence of regular check-ups, and a fractured tooth from a chew is exactly the claim that gets declined.

What to do about the puppy chewing phase

Between roughly three and seven months your dog will chew everything, and it isn’t optional behaviour — teeth are moving and the gums are genuinely uncomfortable.

Fighting it doesn’t work. Redirecting it does.

Provide plenty of appropriate options and rotate them, because novelty matters more than quantity. Frozen carrots, a damp knotted tea towel put in the freezer, soft rubber puppy toys, a Kong stuffed with his own soaked kibble and frozen.

Avoid anything hard entirely during this period. Puppy teeth are softer than adult teeth and they’re about to fall out anyway.

Manage the rest with gates, tidiness and supervision. A puppy with access to a whole house will find the skirting board, and no amount of correction beats simply not giving him the opportunity.

And check his mouth weekly through this phase. Retained puppy teeth, particularly canines, are common and need removing — you’ll see an adult tooth coming through alongside a baby one that hasn’t shifted.

A sensible working policy

Rubber toys and stuffed Kongs as the daily default, because they’re safe, reusable and free to fill.

Softer edible chews two or three times a week, supervised, calorie counted, binned when they get small.

Raw non-weight-bearing bones occasionally if it suits your dog and your household hygiene.

Nothing hard enough that you couldn’t dent it with a fingernail.

And ask your vet what they see most fractures from. Every practice has a list, they’re happy to share it, and it’s more useful than anything on the packaging.