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

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

What Makes Dogs Happy? 10 Vet-Verified Things

We completely understand the love and devotion that comes with owning a dog. And while you’re doing everything you know to make them...

10 Wrinkly Dog Breeds: Info, Pictures & History

Dogs are found in all different shapes and sizes, and some breeds naturally have wrinkles. These wrinkles on dogs could be typical of...

Health Problems for Dogs In the Summer: 12 Vet-Verified Issues & How to Help

Dogs make wonderful pets, and they provide us with many years of companionship. However, keeping them safe is not always easy, and as...

150+ Popular & Unique Nova Scotia Duck Tolling Retriever Names

Naming your pup is an important step, and it’s not something that you want to get wrong. You’ll be using this name for...

More related

Bummer and Lazarus: The Story of San Francisco’s Legendary Dogs

They belonged to no one, it is said, but they were often seen with the eccentric Emperor Norton....

Beaker (Beagle & Cocker Spaniel Mix): Info, Pictures, Care & More

The Beaker, often called the Bocker, or Bocker Spaniel, is a cross between two purebreds – the Beagle and the Cocker Spaniel. Being...

How Much Does Dog Broken Nail Treatment Cost at the Vet? 2025 Pricing Guide

Most dogs have had a broken nail at some point, and depending on the type of break, it can be painful for our...

Papillon vs Pomeranian: What’s the Difference? (With Pictures)

When comparing Papillons and Pomeranians, it’s important to consider their differences in appearance, personality, and care requirements. Both breeds are small, intelligent, and...

Keep reading

Nulo Puppy Food Review 2025: Recalls, Pros & Cons

Review Summary Nulo Dog Food focuses on high-protein recipes with low carbs and low glycemic ingredients. This independently owned company is based out of Austin, Texas, with facilities in Nebraska, Kansas, and North Dakota. All facilities are approved by the...

Dogster_Nulo Puppy Food Review

Can Dogs Eat Custard? Vet Approved Advice

Pastries and sweets are delicacies that us humans enjoy regularly. As curious creatures, dogs will often show interest in our food. It is no secret that dogs will beg you for a taste of whatever delicious snack you’re eating! As...

Can Dogs Eat_Custard

8 Best Fresh Dog Food Delivery Services in Canada of 2025 – Reviews & Top Picks

There are many fresh dog food delivery services out there, but it seems that many of the most raved-about services do not provide delivery options to Canada. But Canadians need not worry as we set out on a mission today...

bulldog eating fresh food

RAWZ Dog Food Review 2025: Recalls, Pros & Cons

Review Summary The RAWZ pet food brand is relatively new and is making waves in the industry as one of the most committed brands in terms of quality and taste. Most of their ingredients are sourced either in the United...

Dogster_RAWZ Dog Food Review

Petaluma Dog Food Review 2025: Our Expert’s Opinion

Petaluma is changing the pet food industry by producing 100% vegan dog food that also contains high-quality ingredients. This Oakland-based company is mission-driven and works diligently towards building a more environmentally friendly and sustainable model for pet food production. Petaluma...

Dogster_Petaluma Dog Food Review

Victor Dog Food Review 2025: Pros, Cons, Recalls & FAQ

Review Summary Victor dog food is a newer dog food from a US-owned company. The brand touts its commitment to high-quality dog food with only the best ingredients, ensuring that dogs get the best possible nutrition at any life stage....

Dogster_Victor Dog Food Review

Can Dogs Eat Capers? Vet-Reviewed Nutrition Facts & FAQ

You love your dog, so you want to give them treats every now and again, and sometimes those treats are your own food. A lot of the time, depending on the food, this is (mostly) fine for your pet. But...

Can Dogs Eat Capers

7 Best Low-Fat Dog Foods in 2025 – Reviews & Top Picks

Getting an overweight dog to shed some pounds can be challenging, but it’s the best thing for them. Obesity can lead to other health issues, like high blood pressure, heart disease, and diabetes. As much as we love our pups...

Ginger dog eating