Short answer: The best dental chews for dogs share three traits. They are firm enough to scrape plaque off the teeth, soft enough that they can't crack a tooth, and long-lasting enough that your dog chews for more than a few seconds.
A chew that disappears in one gulp does almost nothing for teeth, and a chew that is rock-hard can do real damage. The right pick sits between the two, and it depends on your dog.
Instead of a list of products, this guide compares the main types of dental chews side by side, explains a simple at-home test for hardness, and matches the right type to puppies, seniors, small dogs, and power chewers.
How Chewing Actually Cleans a Dog's Teeth
Plaque is a soft film of bacteria that builds up on teeth every day. If it isn't removed, it hardens into tartar within a few days, and tartar can only be removed by a professional cleaning. Veterinary organizations commonly note that most dogs show some signs of dental disease by the age of three.
Chewing helps in two ways. First, the chew rubs against the tooth surface and scrapes away soft plaque before it hardens. Second, chewing increases saliva, which helps rinse the mouth. Both effects depend on time. A dog needs to work a chew with its back teeth, where tartar builds up fastest, for several minutes to get a real cleaning effect.
That is why "how long does it last?" is the most important question to ask about any dental chew.
What is the VOHC seal?
The Veterinary Oral Health Council (VOHC) reviews test data from manufacturers and awards a seal to products shown to reduce plaque or tartar. A VOHC seal is useful evidence for products sold specifically as "dental treats." Many natural chews, including bully sticks and yak chews, are not submitted for VOHC review, so the absence of a seal doesn't mean a chew does nothing. It just means you'll judge it by hardness, duration, and ingredients instead.
The Fingernail Test: Is a Chew Too Hard?
Broken teeth are the main risk with dental chews. The upper fourth premolar, the large tooth dogs use to crush, is the one that fractures most often, and very hard chews are a common cause. Two quick tests help you avoid that:
- The fingernail test. Press your thumbnail firmly into the chew. If it leaves a small mark, the chew has some give. If it doesn't mark at all, be cautious with strong chewers.
- The knee test. Tap the chew against your kneecap. If it hurts, it is probably too hard for an aggressive chewer.
Chews that often fail both tests include antlers, cooked bones, hooves, and hard nylon. Natural chews that soften as they are chewed, such as bully sticks, collagen sticks, and yak chews, start firm but get softer at the surface as your dog works on them.
Can yak chews break teeth?
Yak chews are hard when you first open the bag, which is why this question comes up. They soften gradually as the dog chews, so the surface the teeth are working on gets less hard over time. For dogs with sensitive teeth, older dogs, or dogs new to hard chews, soaking a yak chew in water for about 10 minutes before the first session makes it gentler. Dogs with existing dental problems should get their vet's opinion before starting any hard chew.
The Best Dental Chews for Dogs, Compared by Type
| Type | Cleaning Effect | How Long It Lasts | Watch Out For |
|---|---|---|---|
| Dental treats (shaped, often VOHC-sealed) | Tested for plaque or tartar reduction | Minutes, sometimes less | Fast eaters swallow them before they work |
| Yak chews | Long scraping action on back teeth | Several sessions | Hard at first; size up and soak for sensitive teeth |
| Bully sticks | Good scraping as the end softens | One or more sessions | Calories; remove the last two inches |
| Collagen sticks | Moderate scraping, gentler texture | One session for most dogs | Choose a thick stick for strong chewers |
| Rubber dental toys | Mild, depends on design | Reusable | Replace when pieces start to break off |
| Antlers, cooked bones, hard nylon | Some scraping | Very long | High risk of broken teeth |
No single type is best for every dog. Many owners combine two: a quick daily dental treat or water additive, plus a long-lasting natural chew a few times a week for the scraping effect.
Are bully sticks good for dogs' teeth?
Bully sticks are one of the better natural options for teeth, as long as the dog actually chews them instead of swallowing large pieces. As the end softens, it turns fibrous and works almost like floss along the gum line. The trade-off is calories, so they work best a few times a week rather than as an all-day chew. Thicker sticks last longer and give the teeth more contact time.
Best Dental Chews by Type of Dog
Teething puppies
Puppies chew to soothe sore gums, and their baby teeth are more fragile than adult teeth. Go for softer, smaller chews: a puppy-sized yak chew, a thin bully stick, or a collagen stick, with short sessions and close supervision. Avoid antlers and bones completely. Our guide to the best puppy chews for safe teething goes into more detail.
Senior dogs
Older dogs often have worn or loose teeth, so gentler textures work better. Collagen sticks and soaked yak chews are good options, and shorter sessions are kinder on tired jaws. See our full guide to senior dog chews for aging teeth.
Small dogs
Small breeds are especially prone to tartar because their teeth sit close together. They need chews sized for small mouths but still long enough that they can't be swallowed. A small yak chew or a 6-inch standard bully stick usually fits.
Power chewers
Strong chewers finish most dental treats in seconds, which means little cleaning. A large yak chew or a braided bully stick lasts long enough to actually work on the teeth. Use a chew holder for the last piece, and read up on bully stick safety before choosing a size.
Dental Chews Don't Replace Brushing
Chewing helps, but it can't reach every surface the way a toothbrush can, and it can't remove tartar that has already formed. The most effective routine combines a few habits:
- Brush your dog's teeth several times a week, ideally daily, with a dog toothpaste.
- Offer a long-lasting chew a few times a week for the scraping effect.
- Use a water additive such as our dental water for fresher breath between brushing sessions.
- Check your dog's mouth monthly for red gums, broken teeth, or brown buildup.
- Keep up with professional dental checkups.
If you're starting from scratch, our step-by-step guide on how to build a dog dental routine at home walks you through it.
Signs your dog needs a dental checkup, not a new chew
- Bad breath that doesn't improve
- Red, swollen, or bleeding gums
- Chewing on one side or dropping food
- A broken or discolored tooth
- Pawing at the mouth or refusing chews they used to love
Looking for a long-lasting chew that keeps your dog working on their teeth?
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Shop Yak ChewsFAQ
What are the best dental chews for dogs?
The best dental chew is firm enough to scrape plaque, passes the fingernail test, and lasts long enough for your dog to chew for several minutes. For most dogs that means a long-lasting natural chew such as a yak chew or bully stick, often combined with brushing.
Do dental chews actually work?
They help when the dog chews them long enough to scrape the tooth surface. Products with a VOHC seal have been tested for plaque or tartar reduction. Chews that are swallowed quickly do very little.
How often should I give my dog a dental chew?
A few times a week is enough for most dogs, alongside regular brushing. Count chews as part of your dog's daily calories.
Are hard chews bad for dogs' teeth?
Very hard chews like antlers, cooked bones, and hard nylon can fracture teeth. Choose chews that leave a mark when you press your thumbnail into them, or that soften as your dog chews.
Can dental chews replace brushing?
No. Chews help between brushings, but they can't clean every surface or remove existing tartar. Brushing and professional cleanings are still needed.
What dental chews are safe for senior dogs?
Softer options such as collagen sticks and yak chews soaked in water for about 10 minutes are gentler on older teeth. Keep sessions short and check with your vet if your dog has loose or painful teeth.
Try the fingernail test on whatever chew your dog has right now. If your nail leaves no mark and your dog chews hard, swap it for something with more give this week. It is the cheapest dental decision you will make all year.
