When Is a Dog Considered an Adult: 12 Amazing Facts

Archana Srinivasa Varadan
11 Min Read

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When is a dog considered an adult? Quite an interesting question. Dogs are the most preferred pets and are found in almost every home. Loyalty is the first trait that comes to everyone’s mind when the name dog is heard. Their friendliness, affection, and energy make them lovable pets.

How do you find out how old is your dog if you have them as your pet? Let’s find out. You will not find your puppies mature into an adult all of a sudden. Typically, dogs crossing the age of one are known as adult dogs. Yet, this may vary based on the size and breed of your dogs.

1. How To Find the Size of Your Dog?

When is a dog considered an adult?
Photo by Monika Simeonova/ Unsplash. Copyright 2022

Have you ever thought about how to find out whether your dog is a small, medium, or large breed? Typically, a dog’s weight determines its size. And based on its size, it falls under the small, medium, and large breeds categories. They can be further categorized as a toy, teacup, extra large, and giant breeds.

Now that you know about the breeds, it’s time to discover when each of them becomes an adult.

Toy or smaller breed dogs turn into adults at around nine months, medium breeds at around 12 months, larger breeds at around 18 months, and giant breeds can take up to 24 months.

One noteworthy point is that though the physical growth rate of your puppies stops, it does not guarantee that they are fully emotionally and physically mature.

2. What Is Sexual Maturity in Dogs?

Sexual maturity is the stage at which your dog can give birth as its reproductive organs are fully developed. Most dogs attain this stage at around six months. A dog gets sexually matured before its physical maturity.

3. What Is Physical Maturity in Dogs?

It is the stage where you witness a change in their physical needs, such as the amount of food they consume and the amount of exercise required to remain healthy. However, when your pup reaches physical maturity, it may still retain some puppy energy and might be resisting the urge to chew everything.

4. What Is Emotional Maturity in Dogs?

It is the stage when your dog is completely out of its puppy behavior and behaves like an adult dog. Some visible examples include knowing their boundaries, being more responsive in their training, having fewer distractions, become friendly with other dogs by responding to their social cues.

However, not all dogs reach emotional maturity at the same time. Typically, dogs tend to reach this stage when they turn two.

Having seen all these transitions, can you guess when the most testing time for a pup is?

5. Testing Times for a Puppy – The Adolescent Period

Puppy
Photo by Austin Wilcox/ Unsplash. Copyright 2021

Similar to human babies, dogs also face testing during their growth phases. Especially majority of puppies will undergo a hard time when they are about five months of age. Based on the breed, they don’t come out of the teenager phase for 2-3 years.

That’s not all. Their most challenging period is when they are eight months of age to around 18 months of age.

Your puppy is growing daily and will soon turn into an adult dog. Subsequently, their eating habits will also change. So, you have to switch from puppy food to adult dog food.

6. The Transition From Puppy Food to Adult Dog Food

Younger puppies will be very playful and active, requiring more energy. Hence puppy food contains more calories and protein-rich foods. Your puppies grow taller, and when you notice it stopping, that is the perfect time to transition to adult food.

7. When Does Your Puppy Stop Growing Taller?

Not all puppies stop growing at the same rate. It is mainly based on their size. Small breed dogs stop growing taller at around 9-12 months, medium breed at around 12 months, and large breeds at around 12-16 months.

8. What Does the Food of Adult Dogs Contain?

Adult Dog
Photo by Nirav Jadeja/ Unsplash. Copyright 2020

Adult dog food contains rich nutrients and prevents your dog from gaining extra weight. When switching to adult food for your dogs, you must be careful that this does not upset their stomach.

A better option would be to consult your veterinarian to ensure that you provide them with the right portion, thereby satisfying their weight and health requirements.

High-Energy Diet for Small Breeds

Jehanzaib Ahmed, Founder and CEO at wildlypet.com, offers valuable insights on feeding your small breed dogs a high-enery diet for growth and stamina:

“Small dog breeds have a higher mass-specific metabolic rate [that] results in quick energy burn. To counter this, owners should create a well-balanced, species-specific dietary chart focused on frequent calorie intake at regular intervals.

Since they need more calories per pound of body weight to fuel their energy levels, small dog breeds require a diet [that] is high in protein and healthy fats.

They must consume a balanced portion of chicken, fish, and lamb, [as these] are excellent sources of the required nutrients.

These foods aid in building and repairing tissues, maintaining a healthy coat, and providing energy for their active lifestyle and optimal health.

In addition, owners of small dog breeds should also consider adding a good amount of easily digestible carbohydrates, essential vitamins, and minerals to their dogs’ diets, as they are vital for energy, proper growth, and the development of their dogs.”

Jehanzaib Ahmed - Featured
Jehanzaib Ahmed

9. How To Find the Age of Your Dog?

It is very important to know your dog’s age so that you can check whether they are reaching its milestones properly. Younger dogs will be more lively and energetic when compared to older dogs. This is because as dog ages, their energy also comes down. But wait! Sometimes, even an older dog can have energy bursts similar to a puppy.

So, how do you determine their age if they are a mixed breed or adopted from a shelter? You can do this from their physical features.

9.1. Teeth

Your puppy will have 28 baby teeth when they are roughly about six weeks of age. When a puppy grows and is about 16 weeks of age, these teeth start falling, and you will find adult teeth at around six months.

9.2. Puppy Coat to Adult Coat

When a puppy is born, it has a single coat with soft and fluffy fur that helps regulate its body temperature. However, this puppy coat is not permanent. When dogs age, this coat is replaced by a much thick and stiff adult coat.

9.3. Fewer Accidents

Puppies must be house-trained, and you must take them out regularly to avoid accidents. The thumb rule for the duration a puppy can hold its urine is its age in months plus one.

For instance, when a puppy is two months old, it can stay without urinating for three hours; if it’s a three-month-old, it can stay without urinating for four hours, and so on.

Hence as a dog grows, it will hold its urine for long hours, resulting in fewer accidents.

adult dog
Photo by Lenin Estrada on Unsplash Copyright 2019

10. Exercise

Young dogs are more energetic, so playtime is a must to stay fit. While a puppy requires a minimum of one hour of exercise daily, older dogs require less exercise as they get near their senior years.

11. Necessities for Dogs

When you have a pet, be it a dog or a puppy, there are some mandatory necessities such as a dog collar, chewable toys, and a bed. Though these are basic things, the size may vary based on the dog. For example, bigger dogs may require bigger toys.

Enhance Training With Hand Signals

Here is an expert insight on training dogs by Olivia Kepner, Founder of Coolwood Wildlife Park:

“Small dogs respond well to visual cues, so incorporating hand signals with verbal commands can be highly effective.

This technique helps in situations where verbal commands [might not be heard] or if the dog experiences hearing loss in the future. 

Training with hand signals [not only] improves communication but also deepens our connection, as it requires more attentive interaction from both of us.”

Olivia Kepner - Featured
Olivia Kepner

12. Veterinarian Visit

Similar to humans, your pup needs a doctor visit too. Lots of expenses occur within one year for healthy dogs. These include puppy vaccinations, deworming medicines, etc.

A dog’s life is very short when compared to humans. So, enjoy your time with your dog. Also, senior dogs need more care as many physiological changes occur as they age.

Guest Author: Saket Kumar

Last Updated on by NamitaSoren

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Hello all! Archana here. I am an ECE graduate and started my professional career with Ashok Leyland as a trainee. Worked as a schematic designer for trucks, and buses. Then moved to Renault Nissan as an electrical engineer, and enjoyed designing schematics for cars such as Kwid, Kwid EV, Datsun Redi Go, and the latest Triber. Known for my hard work, and sincerity, had a great time working there for four and a half years. Took a break from my career in January 2020. Currently back on track again, but this time as a content writer by following my passion for writing. I also underwent a content writing course with Henry Harvin to hone my writing skills. Have a good command of the English language and can deliver good content according to the requirements. Reading books is my favorite hobby, and when I am not writing, you can find me enjoying a book.
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