Bones and dental health

What Does Biology Say – and What Does the Research Show?

Chew bones are one of the most debated topics in canine nutrition. Some believe they are dangerous. Others believe they are essential. As always, the truth lies in knowledge, context, and proper use. This article gives you a science-based yet accessible overview of: - Why dogs are biologically adapted to eat bones - What raw meaty bones actually provide nutritionally - How chewing affects mental health - What research says about bones and dental health - The real risks — and how to reduce them

Is the Modern Dog “Too Weak” to Eat Bones?

A common myth is that “modern domesticated dogs have weaker digestive systems than wolves.” There is no scientific evidence supporting that claim. Dogs and wolves share up to 99.9% of their DNA. Their digestive anatomy and physiology remain fundamentally the same. The differences are primarily phenotypical (size, appearance), not functional. Yes — dogs have developed an increased ability to digest carbohydrates (more copies of the amylase gene and adaptations in gut microbiota). But this does not mean they lost the ability to digest meat and bones. On the contrary: - A dog’s stomach acid has a pH of 1–2 - It efficiently breaks down raw meat and bone - It acts as a natural barrier against many pathogens - Biologically speaking, the dog remains a bone-eating carnivorous species

What Do Raw Meaty Bones Provide Nutritionally?

It is important to distinguish between: - Raw meaty bones (RMBs) - Ultra-processed chew products When we talk about health benefits, we are referring to raw meaty bones. These provide: - Calcium and phosphorus in natural balance - Trace minerals such as zinc, magnesium, manganese, iodine, selenium, and iron - Glucosamine and chondroitin - Highly bioavailable proteins and amino acids A simple way to understand it: Bones build bones. Cartilage builds cartilage. Muscle builds muscle. Minerals stored in bone are present in the exact form the dog’s body is designed to utilize.

Bones and Mental Health

This may be the most underestimated benefit. When a dog chews: - Heart rate decreases - Stress hormones are reduced - Endorphins and dopamine are released - The parasympathetic (“rest and digest”) nervous system is activated Research shows: - Chewing reduces activation of the hypothalamic–pituitary–adrenal (HPA) axis - Dogs with anxiety show improved working memory with increased chewing frequency - Chewing behavior is linked to improved emotional regulation and focus Chewing is not just “entertainment.” It is neurobiological self-regulation. For puppies: - Relieves teething discomfort - Reduces destructive chewing For adult dogs: - Reduces boredom - Provides emotional satisfaction - Improves focus and trainability

Dental Health – What Does Research Say?

Dental calculus (tartar) is one of the most common veterinary diagnoses. Most dogs develop dental disease before the age of three. So the real question becomes: Are we doing enough to prevent it? A controlled study published in the Australian Veterinary Journal investigated the effect of daily chewing of raw beef bones on dental calculus in dogs. All dogs had existing tartar at baseline. Results showed: - 35.5% reduction in tartar after 3 days of chewing - 81.6% reduction after 12 days - 87.8% reduction after 20 days The reduction occurred because of the mechanical scraping effect of chewing raw bones — not due to any chemical agent. The mechanism is straightforward: Chewing provides mechanical cleaning — essentially nature’s toothbrush.

Can a small dog chew on large bones? Yes!

The Oral Microbiome – More Than Just Teeth

The mouth is the first part of the digestive system. The bacteria living in the oral cavity influence: - Dental health - Inflammatory signaling - Gut microbiota - Systemic health Studies show that dogs with periodontal disease have reduced oral microbial diversity. Chronic dental disease has been associated with alterations in gut microbiota (including increased Proteobacteria and reduced Firmicutes). This relationship is known as the oral–gut axis. By reducing plaque, increasing saliva production, and supporting natural mechanical cleaning, raw meaty bones may also contribute to a more balanced oral microbiome — which supports gut and dental health.

What Should Not Be Given?

Avoid: - **Cooked bones (they splinter easily)** - Weight-bearing bones (femurs, marrow bones) - Bones that are too small and may be swallowed whole - **Rawhide (chemically processed and bleached)** Research from Finland (DogRisk study, n=4771) found: - Carbohydrate-rich diets were associated with increased risk of tartar - Raw, minimally processed diets were associated with lower risk - Frequent **rawhide consumption** increased risk Protective factors included: - Raw meaty bones - Raw cartilage - Raw organ meats

Example of rawhide

Risks – and How to Reduce Them

Feeding bones is not risk-free. Potential risks include: - Choking - Tooth fractures - Constipation if given too often - Individual variation in chewing behavior To reduce risk: - Never feed cooked bones - Choose bones from younger animals (lamb, veal, poultry) — they are softer and more flexible - Introduce slowly - Choose appropriate sizes for YOUR dog - Always supervise your dog Chalky white stool = too much bone Some dogs should not receive bones: - Dogs with severe dental damage - Dogs missing many teeth - Dogs that crush bones excessively

How Often Can You Feed Raw Bones?

As part of a properly balanced raw diet: daily. As a preventive dental measure: 3–4 times per week. Puppies can receive chew bones from around 8 weeks of age, in moderate amounts due to calcium regulation.