Puppy Birth Weight and Growth Guide

 One of the most important habits you can build as a new puppy caretaker is tracking weight. A puppy's weight tells you more about its health than almost anything else in those first few weeks of life. It tells you if puppies are feeding well, growing properly, and thriving — or if something is quietly going wrong before any other signs appear.

When Bella had her puppies, I weighed each one every single morning without fail. That small daily habit gave me peace of mind on the good days — and early warning on the days when one puppy needed extra attention. Here is everything you need to know about puppy birth weight and healthy growth.

What Is a Normal Birth Weight for Puppies

Birth weight varies significantly depending on the breed of the mother. There is no single universal number — what is normal for a Chihuahua puppy is very different from what is normal for a Labrador puppy.

Here are general birth weight ranges by breed size:

Toy and Small Breeds 

(Chihuahua, Pomeranian, Yorkshire Terrier)

Typical birth weight: 75 to 200 grams

Medium Breeds 

(Beagle, Cocker Spaniel, Border Collie)

Typical birth weight: 200 to 350 grams

Large Breeds (Labrador, Golden Retriever, German Shepherd)

Typical birth weight: 350 to 600 grams

Giant Breeds

(Great Dane, Saint Bernard, Mastiff)

Typical birth weight: 600 to 800 grams or more

Within the same litter puppies will naturally vary in size. Some will be noticeably bigger than others. This is completely normal. What matters is that each individual puppy is gaining weight consistently from day to day.

How to Weigh Puppies at Home

You do not need special equipment. A simple kitchen scale that measures in grams is all you need. Weigh each puppy at the same time every day — most breeders prefer to do this in the morning before the first feeding of the day.

Keep a small notebook or use your phone to record each puppy's weight daily. Name or number each puppy so you can track them individually. Even simple labels like a small dot of nail polish on a toenail can help you tell puppies apart in a large litter.

Weigh gently — newborns are fragile. Place them on the scale for just a few seconds and return them to mama immediately.

How Much Weight Should a Puppy Gain Each Day

This is the question every new puppy caretaker wants answered. A healthy puppy should gain roughly 5 to 10 percent of its body weight every single day during the first two weeks of life.

To make this practical:

A puppy born at 300 grams should gain approximately 15 to 30 grams per day

A puppy born at 500 grams should gain approximately 25 to 50 grams per day

A puppy born at 150 grams should gain approximately 8 to 15 grams per day

By the end of the first week most healthy puppies will have gained enough weight to nearly double their birth weight. By the end of two weeks they should have doubled it completely.

Week by Week Growth Guide

Week 1 (Days 1 to 7)

This is the most critical week. Puppies are entirely dependent on their mother's milk for nutrition and warmth. Daily weight gain should be consistent every single day. Eyes and ears remain closed. Puppies sleep almost constantly and wake only to nurse.

Week 2 (Days 8 to 14)

Growth continues at a strong pace. By the end of week two most puppies will have doubled their birth weight. Eyes begin to open toward the end of this week — usually around day 10 to 14. Ears begin to open as well.

Week 3 (Days 15 to 21)

Puppies become much more aware of their surroundings. They start to stand and take their first wobbly steps. They begin to explore the whelping box. Teeth start to come in. Weight gain continues steadily.

Week 4 (Days 22 to 28)

This is when weaning can begin to be introduced gradually. Puppies start showing interest in solid food. They are more active, playful, and vocal. Weight gain remains strong.

Weeks 5 to 8

Puppies transition more fully onto solid food. Nursing decreases naturally. Social behavior develops rapidly. By week eight most puppies have reached a weight four to five times their birth weight and are ready for their new homes.

Warning Signs: When Weight Gain Is a Problem

Weight loss or failure to gain weight is one of the earliest and most reliable signs that a puppy is in trouble. Take action immediately if you notice

Weight loss on any single day 

A puppy should never lose weight after the first 24 hours of life. Even a tiny loss deserves close attention and monitoring.

No gain for two consecutive days  

If a puppy's weight stays completely flat for two days in a row, something is wrong. Check that it is nursing properly and contact your vet.

A puppy falling significantly behind its littermates 

Some size difference is normal. But if one puppy is gaining far less than all the others, it may be getting pushed off the nipple by stronger siblings. Help it nurse more frequently.

The fading puppy syndrome 

This is a term used for puppies who are born apparently healthy but begin to decline in the first two weeks of life. Signs include weight loss, constant crying, cold body temperature, and weakness. Fading puppy syndrome can have many causes and requires urgent veterinary attention.

What to Do If a Puppy Is Not Gaining Weight

If a puppy is not gaining well, the first step is to make sure it is actually nursing successfully. Watch it carefully during feeding time. A puppy that is latching properly will be actively suckling — you will see its little jaw working and hear quiet suckling sounds.

If it cannot latch or is being pushed aside, help it find a nipple and hold it in place during feeding. You may need to do this at every feeding for the first few days.

If the mother does not have enough milk or a puppy simply cannot nurse despite your help, your vet can advise you on puppy milk replacer and how to bottle or tube feed safely. Never give cow's milk to puppies — it causes digestive problems and does not provide the right nutrition.

My Personal Experience

With Bella's litter there was one puppy — the smallest of the five — who gained much more slowly than her siblings in the first three days. Every morning when I weighed her my heart would sink a little seeing such small numbers.

I started helping her latch at every feeding and making sure she had a clear turn without being bumped away by her bigger brothers and sisters. By day five she had turned a corner and started gaining well. By week two she had almost caught up with the rest of the litter.

She became the most energetic and playful puppy of the whole group. Watching her thrive after those difficult early days was one of the most rewarding things I have ever experienced.

Final Thoughts

Weighing your puppies every day takes only a few minutes — but those few minutes can save a life. Small problems caught early are almost always fixable. Problems that go unnoticed for too long are much harder to reverse.

Get a kitchen scale, start a simple weight log, and make it part of your daily routine from the very first day. Your puppies cannot tell you how they are feeling — but their weight will.

Watch the numbers. Trust the numbers. And never ignore a puppy that is falling behind.

For more newborn puppy care guides, visit PawMama!

My dog Bella is such a wonderful and loving companion. During her pregnancy, I noticed how she became even more gentle and trusting. Watching her settle into the whelping box I had built for her was one of the most touching moments I have experienced as a dog owner. She sniffed every corner, circled around a few times, and then lay down peacefully — as if she knew this was her safe place.Building that box for her did not take much time or money, but it gave her exactly what she needed — security, warmth, and a space that was truly hers. If you are preparing for your dog's delivery, please do not skip this step. Your dog cannot ask for what she needs, but she trusts you completely to provide it.

That trust is the most beautiful thing about being a dog mama.