Stages Of Puppy Development: What To Expect At 4 Months

Jul 20, 2023 | Dog Health, Dogs

Getting a puppy is an exciting and life-changing experience for all new puppy owners. But it’s important to understand your dogs growth and development from the day they’re born so you can keep them happy and healthy and you have a good time with it too.

We’ll explore how old a 4 month old puppy is in human years, their ideal weight and size at 4 months old, health concerns to look for, and best practices for training and socialization at 4 months old in their new home. We’ll also touch on the core vaccinations and non-core vaccinations that your dog needs to stay healthy at this young age.

How Many Weeks Is A 4 Month Old Puppy?

You may be wondering how many weeks a 4-month-old puppy is. The answer is that at 4 months your dog is roughly a 16 week old puppy.

It’s important to make sure they’ve had all their core vaccinations before exposing them to the outside world because even though your little daredevil pooch may seem invincible running everywhere and getting into all sorts of trouble, puppies at this age are really vulnerable and not yet ready for many diseases in the outside world.

Core vaccinations should be done before they’re at 18 weeks, and they include Rabies, Distemper, Parainfluenza, Parvovirus, and Hepatitis. Non-core vaccinations such as the Rattlesnake vaccine, Lyme disease, Bordetella, Giardia, Leptospirosis, and Canine Influenza (H3N8) are optional depending on your dog’s breed or lifestyle but still recommended by vets for extra protection from illnesses

Taking your 4-month old puppy out into public places too early can expose them to diseases that can put their health in harm’s way. So be a responsible pet owner and wait until your dog has had all their shots first!

Cute puppy brown Pug playing with their mother in green lawn

Understanding Your Puppies’ Growth And Development

At four months, your dogs growth and development should be monitored carefully. This is an important time for puppies, as they’re still growing rapidly at this age and need a lot of pet care.

It’s important to watch out for any health concerns that may arise during this period. Puppies’ weight and size should also be closely observed to ensure proper nutrition is being provided.

As already mentioned, vaccinations during this time are essential for their future health and well-being. Training and socialization should also be a priority during these four months so the puppy can learn the basic commands needed for them to become responsible members of society. With proper care and attention given during these four months of puppyhood, your dog will grow into a healthy adult who’s ready to face the world…or at least the backyard!

Here’s a handy chart that shows major events in your puppy’s first 9 months:

Puppy Growth Chart for the first 9 months Infographic

How Old Is A 4-month-old Puppy In Human Years?

It’s important to know how a four-month-old puppy compares to humans in terms of age, as this will help you understand their development, behavior, and ensure you provide the best care for them (hopefully with patience). Depending on the breed, your four-month-old puppy may be as young as a toddler or as mature as an adolescent. Dog breeders have done a good job of keeping track of this and can help you determine your puppy’s age in human years. But a general rule of thumb is a 4-month old puppy is roughly equivalent to a 2 or 3-year-old human child, although toy breeds may mature more quickly than larger breeds.

At this stage, they are still considered young puppies and are usually still dependent on you for most things. During this time, it’s important to feed your young puppy solid food on an appropriate puppy feeding schedule so they get into a routine. It’s also during this period that puppies begin exploring the world around them as they pass through various developmental stages. Be sure to provide lots of love, positive reinforcement, and plenty of safe chew toys so your puppy can play and occupy themself and ideally stay out of trouble. But remember, at this age, they require constant monitoring, so if possible, don’t leave them alone for too long unsupervised.

Puppy training classes are also recommended at this age so you can properly socialize your puppy with other young dogs and new people. These classes provide valuable skills and knowledge that’ll help you build a strong bond with your pet based on trust and understanding.

Be sure to contact reliable dog breeders who understand the puppies’ growth patterns of different dog breeds, as well as certified trainers who offer puppy training classes tailored to puppies of all ages.

Puppies’ Weight And Size At 4 Months Old

By four months, your puppy is likely a bundle of energy! At this age, it’s important to take into account the birth weight and body weight of your puppy when determining its growth rate. A few good rules of thumb are that puppies double their birth weight by seven weeks old, so if you know what your puppy weighed at birth then you can get an idea of how much they should weigh now.

Generally, puppies will have tripled their birth weight by four months old. And depending on the breed, you may find that some puppies are larger than others at this age. Monitor closely to ensure that your puppy isn’t gaining too much or too little weight as both can be signs of underlying health issues or poor eating habits.

Modifying The Feeding Schedule At 4 Months Old

English cocker spaniel puppy eating dog food

At four months, your dogs feeding schedule may need to be adjusted to ensure they’re getting the proper nutrition and energy needed for healthy growth. It’s a good idea to feed them two or three times a day at this age with puppy food specifically formulated for their stage of life. Puppy food is specially designed for young age dogs who’re still growing, so take care in choosing the right kind for your dog. And the food should have feeding instructions that specify how much your puppy should get based on their caloric needs. Never feed a dog based on how much you think they need or use improper measuring cups. And be sure to have plenty of food on hand so you don’t run out unexpectedly requiring a late night trip to a big box store to grab some food that may not be suitable for your dog.

While you’re adjusting the feeding routine, it’s also important to start crate training your puppy as well. This’ll help them develop better sleeping habits and create strong boundaries between playtime and rest time. With these simple adjustments, you can provide your puppy with the nourishment they need during this critical development period and set them up for success later in life!

Bladder Control At 4 Months Old

At four months, you may notice that your puppy has started to develop better control over their bladder. This is a great time to start potty training your puppy.

Just like human babies, puppies can learn how to control their bladder functions if given positive reinforcement and consistency in training. The key is to create an environment where the puppy feels safe and secure while being trained.

Make sure that you give them plenty of opportunities throughout the day for potty breaks and praise them for successful attempts at going outside or using the designated indoor potty area. Consistency is key when it comes to potty training, so be patient and use positive reinforcement like treats, petting, and verbal praise whenever they get it right. With patience and dedication, your puppy will soon have full bladder control!

Teething At 4 Months Old

Playful cute dog teething

You’ll notice your pup’s mouth is stocked with sharp, pointy baby teeth as they enter their fourth month of life! Teething in puppies can be a tricky time for both pet and parent, but with love and patience, you two will get through it.

During this time, you may want to invest in various chew toys so your puppy can focus on something other than chewing on furniture or shoes. Additionally, keep a close eye out for any potential baby tooth loss as adult teeth start to come in. You may find some of these teeth around the house! If so, don’t worry – this is all part of the teething process. If you don’t see those baby teeth laying around the floor, don’t be too concerned either! It’s not uncommon for pups to swallow them when they become loose.

Just make sure to provide plenty of encouragement and attention when your dog is going through this stage. Investing in fun chew toys can also help distract them from any discomfort they may feel while their new adult dog teeth are coming in. With love and patience during this teething phase, you and your puppy will have a bright future ahead once all those permanent teeth come in!

Dog Training And Socialization At 4 Months Old

Puppy border collie In Training

At four months, it’s time to begin training and socializing your young dog. Training your puppy now will help them learn basic commands, sharpen their social skills, and help you bond with them. It’s important to start training as early as possible so they learn how to interact in a positive way with people and animals.

One of the best places to take your puppy for socialization is the dog park. While there, they can interact with other dogs and learn how to act around them in a safe environment. Make sure you watch them closely – puppies can be easily overwhelmed or startled by other adult dogs’ actions, so it’s important you intervene if necessary. To get your dog more comfortable around people, take a trip to your local Lowe’s or Home Depot, as they allow dogs in the store and it provides a great opportunity to socialize them with people they’re not familiar with so they don’t become aggressive toward newcomers as adults.

You should also teach them some basic commands such as sit or stay while at the park or store; this way, they’ll understand what behavior is acceptable in different situations. With patience and consistency, your puppy will soon develop valuable life skills!

Health Concerns At 4 Months Old

We cannot stress this enough…it’s essential to make sure your 4-month-old puppy is up-to-date on their core and non-core vaccinations, so they can stay healthy as they continue to explore the world around them.

As a pet parent, you want what’s best for your puppy and their health. That means making sure they’re properly vaccinated against all common canine illnesses. Core vaccines such as Rabies, Distemper, Parainfluenza, Parvovirus, and Hepatitis should be completed before 18 weeks.

You should ask your veterinarian about non-core vaccines like the Rattlesnake vaccine, Lyme disease, Bordetella, Giardia, Leptospirosis, and Canine Influenza (H3N8). They may recommend adding them to your vaccine list depending on the breed, lifestyle of you and your pup, and location. But do not wait too long! Get your puppy’s vaccinations done soon for their protection and peace of mind for you as a pet parent.

Frequently Asked Questions

How Many Weeks Is A 4 Month Old Puppy

A 4-month-old puppy is roughly 16 weeks old. It’s important to make sure they’ve had their core vaccinations before taking them out in public. Vaccinations help protect your puppy from diseases and keep them healthy, so follow your vet’s advice for what’s best for your pup.


At what age should I begin potty training my 4-month-old puppy?

You can start potty training your 4-month-old puppy now. Just be patient, compassionate, and responsible while doing so. Have a plan in place and reward good behavior with treats or praise to encourage positive reinforcement.


What should I do if my 4-month-old puppy has an accident in the house?

Don’t worry if your puppy has an accident in the house. Remain patient and compassionate while cleaning up the mess. Show your puppy that accidents are ok, but also reinforce positive behaviors when they do their business outside and house training will be a positive experience for all.


Is there a way to help my 4-month-old puppy with teething discomfort?

Yes, there are ways to help your 4-month-old puppy with teething discomfort. Try offering them frozen toys or treats that can help soothe and ease their pain.


What type of toys are best to help with my 4-month-old puppy’s mental and physical development?

Provide your 4-month-old puppy with toys that are safe, durable, and mentally stimulating. Look for those that encourage physical exercise, like chewable toys or discs with handles. Puzzle toys to engage their minds can also be beneficial. Always supervise playtime with your pup!

The Tail End

Each puppy is a unique individual, developing at their own pace. It’s crucial to be patient while they learn new things and undergo physical changes. Caring for your puppy may require effort, but the rewards are immeasurable when you witness the joy they bring to your life! Providing them with the correct training, socialization, and healthcare guidance will ensure they become a happy member of your family.

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