Skip to main content

At what age is a dog no longer a puppy?

Ask any dog parent, and they’ll tell you that puppies grow into adulthood in the blink of an eye. And, while this is true, a dog’s transition to adulthood is not so straightforward. Understanding your furry baby’s growth process is important because it helps you meet their needs. The key to providing the ideal lifestyle and diet for your dog and help them develop into a healthy pet is to know their maturity level.

And even though certain breeds might exhibit puppy behavior well into adulthood, there is still a point when your furry friend is technically no longer a puppy.

Three dogs at different ages
Suzanne Tucker/Shutterstock

When is a dog no longer a puppy?

Each stage in your dog’s life is important to their overall growth and requires different care from you. Much like humans, a dog’s development breaks down into several stages:

  • Sexual maturity
  • Physical maturity
  • Emotional maturity

As if that weren’t enough of a curveball, you should also know that some of these stages are different depending on your dog’s breed and individual needs. The great news is that as your dog grows, you’ll get to know them better than anyone else. This will make it easy for you to understand where they are in terms of development and help them every step of the way.

Sexual maturity

By 6 months old, most dogs are able to reproduce. This is known as sexual maturity. While your 6-month-old pooch is physically and emotionally still a pup, this is the time to have your dog spayed or neutered if you’d like to avoid unwanted pregnancies. Yes — pup parenthood just got real!

But reproduction isn’t the only issue here. If you want to prevent behaviors such as roaming or marking, then 6 months of age is the best time to fix your pup. At this point, their sex organs are fully developed and can undergo sterilization.

Physical maturity

Physical maturity is more of a gray area, because it depends on your dog’s breed and size. It’s also independent of behavioral maturity. So, at this point, you may find that your dog is fully grown but still behaves like a pup. They also still need a high number of calories and a lot of daily exercise to stay happy. Welcome to the teenage years!

If your puppy reminds you of yourself as an adolescent, then you should know this can be a challenging time. Just be patient and consistent. With clear boundaries and expectations, your furry friend will soon grow into a mature adult.

Here are the general guidelines for your dog’s physical maturity, based on their breed and expected weight:

  • Small breeds up to 30 pounds mature between 10 and 12 months of age.
  • Medium breeds up to 80 pounds reach maturity between 12 and 16 months.
  • Large breeds that weigh over 80 pounds may not reach maturity until they’re 2 years old.

Emotional maturity

Once your pup reaches emotional maturity, they’re a full-fledged dog. This stage in their life is very clear and you’ll quickly notice the difference. Your pooch will stop acting like a puppy or teen. By their second year, your dog will be much more focused and settled down.

Just like with humans, this is a point in your pooch’s life when hormones even out. They listen and respond better and even understand social cues that went over their head before. At this point, you can say that your puppy is now a dog.

Dalmatian dog chewing a tennis ball
Bilevich Olga/Shutterstock

Signs your puppy is aging

Your puppy is losing baby teeth. According to the Veterinary Centers of America, puppies get their baby, or deciduous, teeth between three and six weeks of age. By 12 weeks, these teeth will start falling out to make room for their adult teeth. Many owners panic when they find teeth on the floor or a bit of blood on a chew toy, but there’s no need to worry! This is all normal, as is your puppy even swallowing her deciduous teeth. It sounds scary but poses no danger for your precious pup.

Your puppy is long their puppy coat. A dog’s puppy coat is the fluffy, soft, and short fur that most young dogs have. This coat falls out and is replaced with a longer, coarser adult coat between six and 12 months of age. Depending on your dog’s breed and activity level, they may require more frequent brushing or trips to the groomer.

Adult dog needs

Because development is a gradual process, your dog’s needs change as they transition from puppy to a dog. Since raising a puppy takes time, it’s best to introduce change as needed:

Adult dog food: The switch to adult dog food should happen at physical maturity. This milestone is different, depending on your dog’s breed and weight. Once your pup has physically grown into an adult dog, their dietary needs change and you should adjust accordingly.

Medical care: Starting at 6 weeks, puppies need shots until they’re approximately 16 weeks old. Going forward, healthy dogs should see the vet once a year.

Exercise: While puppies are furry energy balls, adult dog’s exercise needs change depending on their size, breed, and sex. While many small breeds get enough exercise just from walking around the house, larger dogs require at least 30 minutes of daily exercise. As your dog grows, it’ll be easy for you to know how much exercise to provide depending on their personal needs.

As you can see, raising a dog is much like raising a child. Although you won’t get any talk back or sassiness, a dog’s maturity process is still important. From puppy to adulthood, your dog’s needs will change and you should adjust accordingly. Keeping all aspects of their growth in mind is essential to developing a healthy relationship that continues to blossom with time.

Want to know more? You can take a look at our guide on how long do puppies sleep, which plays a major role in their development.

Editors' Recommendations

Topics
Does your dog drink a lot of water? Here’s when you should be concerned
It's usually just the weather, but you should look for signs of dehydration or excess thirst
A pug drinking water from a sink faucet

Ensuring your furry best friend gets plenty of water is one of the most important parts of being a pet parent. But how much water should your dog drink on a daily basis? Veterinarians claim the general rule of thumb is a simple equation: The majority of dogs require around 1/2 to 1 ounce (about 1/8 of a cup) of water per pound of body weight each day. Don't want to reach for your measuring cup? Make sure your pup has round-the-clock access to clean water, and everything should be fine.

That being said, if your dog empties their water bowl several times a day, or you notice their intake has increased drastically, you should probably keep a close eye on things. If your dog drinks a lot of water, you may be wondering, "Why is my dog always thirsty?" We'll share how to monitor your pup's water intake, the most common reasons your dog may be thirsty, and when you should speak with your vet.

Read more
Are Himalayan dog chews safe for your pet? Know this before you buy
These dogs treats are still trendy but should probably be eaten in moderation
A close-up shot of a pug standing in the grass with a bone-shaped treat in his mouth

What do blueberries, kale, and broccoli all have in common? In addition to being delicious, all three are part of the group of so-called superfoods. Unfortunately, there's no federally regulated definition for the term, but Harvard scientists claim food that "offers high levels of desirable nutrients, is linked to the prevention of a disease, or is believed to offer several simultaneous health benefits beyond its nutritional value" can be labeled superfoods. 

Just like you might add chia seeds to your granola or spirulina powder to your smoothies for additional vitamins and minerals, you also want to make sure your dog's food and treats pack a beneficial wallop. Made famous on Shark Tank, Himalayan dog chews have become one of the most hotly debated treats in the pet food game, which begs the question, "Are Himalayan dog chews as healthy as some people think?"

Read more
Is a Belgian Malinois a good family dog? Everything you need to know about this amazing dog breed
Belgian Malinois breed description, family behavior, and more
A Belgian Malinois leaps through a meadow of dandelions

If you're considering opening up your home to a new four-legged family member, there may be a lot of thoughts swimming through your mind. This is totally normal. Bringing home a new pet is a big change, so it's only natural (and responsible) to think through every aspect of the decision before you commit. One thing you may be considering is which dog breed would be best for your home. Although you may not be able to hand-pick your perfect breed when adopting a pet from a shelter, knowing a bit about the most common dog breeds can help you make an informed choice.
The Belgian Malinois is a breed often seen in cities, suburbs, and farms, though it's often mistaken for an entirely different dog -- the German shepherd. While they are related, these breeds are completely separate from one another. Familiarizing yourself with Belgian Malinois characteristics and traits will help you decide whether this may be a breed for your family, but first, we'll have to ask -- is a Belgian Malinois a good family dog?
Let's find out everything there is to know about this strong and loyal dog breed.

Belgian Malinois breed characteristics

Read more