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Ever cuddled up with your dog and wondered what's going on under all that fur? Most adult dogs have somewhere around 319 to 321 bones, depending on who's counting and how. The total changes from pup to pup, because tails come in all lengths, dewclaws come and go, and boy dogs have one extra bone that girls don't. We're sticklers for accuracy, even in the world of bones!
So next time you give your doggo a belly rub, you'll know you're scratching 13 pairs of ribs, a long, bendy spine and a whole lot of bones that look just like the ones in our breed artwork.
What this article covers
Why the Count Changes From Dog to Dog
Your pup's tail is the biggest wildcard. Dogs can have anywhere from about six to 23 tail bones, so a hound whose tail clears the coffee table and a naturally bobtailed pup who wiggles their whole bum can be more than a dozen bones apart. A docked tail changes the count too.
Dewclaws add or take away a few tiny toe bones, especially on the back legs, where some dogs have none, some have one and a few lucky breeds have two. Then there's the baculum, a bone inside the penis that only boy dogs have. Hey, anatomy has never been shy!
Touring the Skeleton, Region by Region
The Skull
Your dog's skull is a big part of that face you love so much. Squishy-faced Pugs and Bulldogs have short, wide skulls (brachycephalic), Labradors have medium skulls (mesocephalic), and elegant Greyhounds and Borzois have long, narrow skulls (dolichocephalic). The coat gets all the compliments, but the skull is behind everything from your dog's jaw strength to how much room there is for that busy, sniffy nose.
The Spine and Tail
Your dog's spine has seven neck (cervical) vertebrae, 13 chest (thoracic) vertebrae, seven lower-back (lumbar) vertebrae and three sacral vertebrae fused together where the pelvis attaches. After that comes the tail, our wiggly wildcard from earlier.
The Ribcage
Dogs have 13 pairs of ribs, one pair for each chest vertebra. The first nine pairs connect to the breastbone, the next three attach through cartilage, and the last pair floats free (so yes, your dog has floating ribs, just like you). A deep, narrow chest is perfect for a sprinter, and a big barrel chest suits a powerhouse pup.
The Forelimbs
Each front leg starts at the shoulder blade (scapula) and goes down through the humerus, the radius and ulna, the wrist (carpals), the long bones of the paw (metacarpals) and finally the toes (phalanges). Ever noticed what looks like a backward knee on your dog's front leg? That's their wrist, because dogs walk on their toes!
The Hindlimbs
The back legs start at the pelvis and go down through the femur, kneecap (patella), tibia and fibula, then the hock (tarsals), metatarsals and toes. That pointy joint halfway down the back leg is the hock, the doggy version of your ankle. Yes, your pupper spends their whole life on tiptoe, like a fluffy little ballerina!
Notable Bones and Missing Ones
Your dog's dewclaw is their first digit, a bit like a thumb or big toe that never quite reached the ground. Front dewclaws are usually attached by bone. Rear dewclaws vary a lot more, and gentle giants like the Great Pyrenees are known for having two.
Here's a fun fact for your next dog park chat. Dogs don't have a true collarbone, just a tiny leftover at most, and their shoulder blades are held on by muscle, not locked to the breastbone. With that free-floating shoulder, the front leg can swing farther forward for a longer stride. Handy for chasing squirrels, less handy for climbing ladders!
How Breed Changes the Dog Skeleton and Movement
Breeding has stretched, squished and changed the same basic bones in all sorts of ways. Dachshunds and Corgis have short, curved leg bones, which is where that adorable waddle comes from. Greyhounds have long legs and a bendy spine that coils and stretches at full gallop. And Bulldogs have broad shoulders and short skulls, so they're sturdy little tanks who'd much rather nap than run a marathon.
Your dog's bones also affect what they can comfortably wear. A Greyhound's narrow head can slip right out of a collar that sits perfectly on a Lab, which is why martingales and sighthound collars exist, and a tiny Chihuahua's delicate neck needs something light and gentle. Our friends at Pink Papyrus make the prettiest adjustable collars, from XS for necks as small as 8 inches all the way up to L for necks up to 28 inches. They also have matching harness and leash sets for pups who are happier without any pressure on their neck, so every furkid gets a comfy fit, whatever's going on under the fur.
Dog Bones and Joints to Keep an Eye On
As your best friend gets older, these are the spots to keep a gentle eye on:
- Hips. This is the ball-and-socket joint where the thigh bone meets the pelvis, and hip dysplasia is common in lots of bigger breeds.
- Kneecaps. Little dogs are prone to a kneecap that slips out of place, and you might notice it as a telltale skip in their step.
- Elbows. These are another common trouble spot for big, fast-growing puppies.
- Spine. Long-backed, short-legged breeds are more likely to have disc problems, so those flying leaps off the sofa deserve some side-eye.
- Skull and airway. Short-faced breeds can struggle with breathing, heat and exercise because of the way their skulls are made.
Nobody knows your dog like you do. Once you know where these bones and joints sit, you'll notice a change in how your pup moves much sooner, and you can tell your vet exactly what you've seen.
How Six Skulls Became Bark & Bone
It all started with six dog skulls and a pitch that went nowhere. I'm a science animator, and in 2018 I drew those skulls for a science story that no one picked up. The file sat on my computer until summer 2021, when I almost hit delete. Instead, I posted the skulls on Instagram and waited to see if anyone would care, and the dog people showed up, asking to wear the art. So in 2024, I turned those skulls into hoodies, tees and wall art for dog lovers everywhere.
Today, I've drawn more than 150 breeds, and every single design starts with true-to-life anatomy. I can tweak a drawing for your dog's sex, docked tail or cropped ears, add their name to a hoodie or turn a photo of your own pup into a custom X-ray portrait. Lots of customers are vets, trainers and dog sport fans, and plenty come back for their next dog, so I get to know them by their dogs' names. It's one of the best parts of the job.
So the next time someone asks how many bones a dog has, you'll have the number, the reason it changes and a pretty good idea of what's going on under all that fur.
Frequently Asked Questions
Yes! Tail bones can range from about six to 23, a swing of 17 bones, so a bobtailed girl without rear dewclaws and a long-tailed boy with double dewclaws can end up far apart. Think of the range as a typical figure, not a law of physics.
Usually not. The differences come from the tail, the toes and the baculum. The seven neck, 13 chest, seven lower-back and three fused sacral vertebrae, plus 13 pairs of ribs, stay the same in most dogs.
Yes! We can tweak the drawing for a docked tail (though the ears don't have bones, only cartilage), plus your dog's sex, so the skeleton looks like your best friend and not a generic breed chart.
Our standard breed designs only cover sex and docking, so something like a removed dewclaw won't show. If your pup is one of a kind (and let's face it, they all are), our custom X-ray My Dog portraits start with a photo of your own dog.
