Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

How to Tell a Dog’s Age: Our Vet Explains 5 Ways

Doberman Pinscher dog sitting with owner on the living room floor in front of sofa

If you purchased your dog from a breeder, chances are that you can celebrate their birthday with confidence. But if you rescued your dog or acquired them through another route and their birthdate isn’t known, you may wonder how old they are.

There are ways to tell a dog’s age, but keep in mind that these will only yield an estimate, not an exact number for your pup. Fortunately, though, an estimate will usually suffice for anything of extreme importance. Here are a few ways to figure out how old your dog is.

Dogster divider_v3_NEW_MAY_24_

The 5 Ways to Tell Your Dog’s Age

1. Check the Paperwork

If your dog came with any paperwork, including a registration certificate, bill of sale, veterinary records, or adoption papers from a shelter, it will often list an age or birthdate. While this would be the easiest and most accurate way to find out your dog’s age, it isn’t possible for every pup, as some dogs are paperless.

You can also try checking with your vet. They should have records going back to the first time that you brought in your dog, and if they were a puppy then, that will definitely help give you a more accurate age. If they were an adult at the time, the vet likely estimated their age at that first visit and documented it. Now all you have to do is add up the years since that visit to know how many candles your dog will be blowing out on their next birthday pup-cake.

young woman and worker at a dog shelter
Image Credit: hedgehog94, Shutterstock

2. Check Their Teeth

Paperwork aside, a dog’s teeth can tell their life story and even give a timeline. Checking a dog’s teeth is more accurate before they’re 6 months old, but it can still be used with other determining factors after that point.

Puppies

Puppies get their first baby teeth between 3 and 6 weeks of age. These are skinnier and sharper than adult teeth. These baby teeth remain until the puppy is about 12 weeks of age, which is when the adult teeth start to come in. The tiny incisor teeth in the front and the canine teeth are first to be replaced with adult teeth, with premolars and molars coming in by the time that the dog is 6 months old. So, if they let you, look into your puppy’s mouth, and see which teeth they have and what kinds they are.

Adults

After the adult teeth come in, it’s harder to determine a dog’s age, but they can still be used for estimates. Rather than the types of teeth, you’ll be looking at coloring, wear and tear, and tartar accumulation. Generally, the older the dog, the worse shape their teeth are in. Senior dogs tend to have discoloration, worn or broken teeth, and tartar buildup. However, this method doesn’t account for regular veterinary teeth cleanings, which keep teeth in better shape, or actions like chewing rocks that can make a dog’s teeth seem older than they are.


3. Check Their Body

Besides teeth, you can check out the rest of your dog’s body to estimate how old they are. Age-related changes to the body will be highly variable, though, depending on the dog’s lifestyle.

Haircoat

Some dogs will start to get gray hair as they age. These usually start around the muzzle and eyes but can extend to the legs and paws. Dogs will start to turn gray at different ages based on genetics, or you may notice gray hairs popping up at the sites of old injuries.

Eyes

As dogs reach the top of the age hill and start down the other side, you may notice changes in their eyes. Normal aging processes, such as lenticular sclerosis, can result in a cloudiness or bluing of the eyes. Dogs can also develop cataracts with age, which can lead to cloudiness and loss of vision.

Paws and Muscles

As a general rule, a dog’s paws get thicker and their muscles get thinner with age. So, compared to a puppy’s paw pad, an older dog’s will be thick and cracked rather than soft and squishy. They may also have a bit of wasting of the muscles, which is particularly noticeable in the hind legs.

Welsh Corgi dog being petted by owner outside at a park
Image Credit: Tanya Consaul Photography, Shutterstock

4. Watch How They Look, Listen, and Move

Due to normal aging, a dog’s vision and hearing may decrease as they get older. Unless a puppy is born with a congenital issue or has an injury, they should have great hearing and vision as a young dog. As they get older, you may notice a gradual degradation in these senses.

You may also notice a slowing down of your dog’s activity, and regular movement may even become difficult or painful. Dogs that are slow to stand up from sitting or lying down or that seem sore after a moderate walk may be a bit on the older side.

When your dog reaches their golden years, you may start to notice a decline in their cognitive function. They may forget tricks and commands that they once knew or have issues with becoming disoriented or lost. Some dogs even seem to change personalities, going from an independent soul to a worrisome, clingy type.


5. Ask Your Vet

If all of this seems like too much, don’t be afraid to talk to your vet. They will use the same guidelines to estimate the age of your dog, but they will likely have more practice at it and have seen more dogs with which to compare.

Vets can also direct you toward a DNA test if you’re interested in getting a more definitive number.

Did you know you can talk to a vet online? Click on the image or button below to schedule a call: PangoVet_Mention-in-Content Savings V1


Dogster divider_v1_NEW_MAY_24_

Why Should You Know Your Dog’s Age?

Celebrating the correct birthday for your dog is fun, but a dog’s age is also a great predictor of when they need to start increasing their veterinary visits, the normal aging processes that you should be aware of, and when to switch up their nutrition and exercise routines.

If you know your dog’s breed, their age can also give you a general idea of how much time you have left with them.

You’re welcome to use our images, but we require you link directly to this site for credit (ex. Image from Dogster)

Dogster divider_v3_NEW_MAY_24_

Final Note

Knowing your dog’s age comes in handy when planning birthdays and when you’ll need to start making changes in their nutrition, exercise, and veterinary care. If you don’t know your dog’s birthdate, it can be a bit difficult, but these methods can help you get an age estimate that should be close enough to provide your pet with the care that they require for the life stage they happen to be in.


Featured Image Credit: gemphoto, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Ask Dr. Paola- Anxiety-Chewing, Postpartum Panting & Spaying (July 14, 2025)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Red Merle Aussiedoodle: Info, Pictures, Origin & History

The Red Merle Aussiedoodle is a captivating and intelligent hybrid breed, known for its unique coat pattern that combines various shades of red,...

Bullpei (Bulldog & Chinese Shar Pei Mix): Info, Pictures & Care

The Bull Pei, also known as the Shar-Pei Bulldog Mix, is a go-to dog breed for anyone looking for a loyal pup that’s...

Top 5 Dog-Friendly Beaches Outside Destin, FL (2025 Update)

Destin, Florida might be a place you are considering to go if you’re looking to take a vacation with your dog. The city...

More related

How to Tell If Your House Smells Like Dog & Effective Tips to Remove It

Dogs may be cute and cuddly (at least when they want to be), but that does not seem to stop them from making...

8 Dog Birthday Cookie Recipes to Treat Your Pup With

This article has been reviewed by a veterinarian for safety. The recipes included in this article will be suitable for most dogs however,...

Boston Terrier vs. French Bulldog: The Main Differences (With Pictures)

The Boston Terrier and French Bulldog are beloved canines that make excellent pets. Although their origins are distinct, they have several similarities that...

Akita Shiba Mix: Info, Pictures, Care Guide & Traits

The Akita Shiba mix is a cross between two very similar Japanese guarding breeds, so you can expect them to look a lot...

Keep reading

11 Best Dog Foods for Huskies in 2025 – Reviews & Top Picks

If you own a Siberian Husky, then you’re well aware of their high energy levels. But did you know that Huskies also have extremely high metabolisms? This does have something to do with their high energy levels, but it has...

Husky-puppy-eating-from-feeding-bowl-indoors

Nature’s Recipe Dog Food Review 2025: Recalls, Pros & Cons

Review Summary Introduction When you’re searching for high-quality, protein-filled dog food for your canine pal, you want only the very best. However, you also want a company that delivers on its promise to provide your pet with the most nutritional...

Dogster_Nature’s Recipe Dog Food Review

Vitamin K for Dogs: 5 Vet-Approved Food Sources

Vitamin K is a necessary nutrient for all humans and animals. In addition to making this vitamin within our bodies, we can get the vitamin from the foods that we eat, and so can your dog! Here are five great...

white samoyed dog looks at a plate of vegetable salad

Carna4 vs Orijen Dog Food 2025 Comparison, Pros & Cons

Dog food can be quite an investment, so it’s important to know you’re choosing the right food for your beloved canine companion. The stakes for premium dog foods are even higher because the price tag can hurt your wallet. Orijen...

Dogster_Dog Food Carna4 VS Orijen

What To Add to Dog Food for Dry Skin: 9 Great Ideas

As dog owners, we understand the frustration of a pet that scratches and licks excessively, but it is much more agonizing for the dog. If you checked for fleas and there are none, your canine friend likely has dry, itchy...

woman feeding dalmatian dog

12 Best Dog Foods for Pitbulls in 2025 – Reviews & Top Picks

Owning a Pitbull and another bully-type dog comes with its own unique set of challenges. One of the things you shouldn’t have holding you back from giving your dog the best life possible is choosing the right food. Pitbulls can...

pitbull eating

How Long Does It Take for a Dog to Digest Food? Vet-Approved Digestive System Basics

We all know that what we feed our dogs—and how they digest it—plays a key role in their overall health. If you’re wondering how long it takes for a dog to digest their food, unfortunately, the answer is not a...

french bulldog eating or drinking from a bowl

Senior Dog Food vs Regular: The Differences, Pros & Cons

As dog owners know, the food that we feed our pups is essential to keeping them healthy. When our dogs start getting older, their bodies change, and so do their nutritional needs. After your dog reached a certain age (which...

Dogster_Senior vs Regular Dog Food