When considering adopting an American Staffordshire Terrier, it's important to educate yourself about the breed.

This section discusses what to expect as they develop, the maximum size they can reach, and even how to troubleshoot to get your dog to the proper weight.

You can check an American Staffordshire Terrier weight chart for some of the information, but there is still a lot more information available.

We've assembled everything you need to know about American Staffordshire Terrier Growth Chart, from when a dog stops growing to how to determine if your dog is the proper weight.

When Do American Staffordshire Terriers Stop Growing?

Your Staffordshire Bull Terrier puppy should reach adult size by 12 months of age, although it is not uncommon for some puppies to reach adult height and length at 18 months of age. However, at this moment, your Staffy will not have reached adulthood.

While it is possible for a dog to stop growing earlier than that, with this breed the dogs will not grow any larger by 18 months.

American Staffordshire Terrier Size Chart

Here is the size chart of an American Staffordshire Terrier:

American Staffordshire Terrier Growth Pictures

What is the Standard American Staffordshire Terrier Size

The American Staffy, American Staffordshire Terrier, or Amstaff is a medium-sized domesticated dog breed that is extremely muscular and energetic. It has a short silky coat and an extremely loyal and courageous attitude. Although not all authorities identify these as distinct breeds), standing approximately 18 inches at the shoulder and weighing between 50 and 70 pounds of muscle.

American Staffordshire Terrier Weight Chart

Listed below is the weight chart of an American Staffordshire Terrier:

Age	Weight (kg)	Weight (lbs)
3 Months	10.6 – 14.3 kg	23.4 – 31.5 lbs
4 Months	13.9 – 18.8 kg	30.6 – 41.4 lbs
5 Months	17.2 – 23 kg	37.9 – 50.7 lbs
6 Months	19.8 – 26.7 kg	43.6 – 58.9 lbs
7 Months	22.1 – 29.8 kg	48.7 – 65.7 lbs
8 Months	23.9 – 32.3 kg	52.7 – 71.2 lbs
9 Months	25 – 34.2 kg	55.1 – 75.4 lbs
10 Months	26.1 – 35.8 kg	57.5 – 78.9 lbs
11 Months	26.6 – 36.9 kg	58.6 – 81.3 lbs
12 Months	27 – 37.8 kg	59.6 – 83.2 lbs

American Staffordshire Terrier Growth Chart – What To Expect
American Staffordshire Terrier Weight Chart by Age

American Staffordshire Terrier Weight  1-2 weeks

At birth, your American Staffordshire Terrier puppy will likely be underweight. They weigh less than a pound when born, however, this varies depending on the mother's genetics and the number of puppies she is carrying.

The more pups a mother has, the smaller the puppies are when they are born. By the time they reach two weeks of age, they typically weigh about two pounds.

American Staffordshire Terrier Weight 3-12 weeks

Between 3 and 12 weeks of age, your American Staffordshire Terrier puppy will undergo a significant growth spurt.

While the average American Staffordshire Terrier puppy weighs between 3 and 4 pounds at around 3 weeks of age, they will grow to between 10 and 15 pounds by the time they reach 12 weeks.

American Staffordshire Terrier Weight 4-6 months

At four months of age, your American Staffordshire Terrier puppy should weigh between 15 and 19 pounds, give or take.

However, most of his growth will occur between the ages of 4 and 9 months. When your puppy reaches the age of nine months, he may weigh between 25 and 42 pounds.

By this point, he should still grow, but keep in mind that American Staffordshire Terriers are not particularly large dogs.

American Staffordshire Terrier Weight  10-12 months

At four months of age, your American Staffordshire Terrier puppy should weigh between 15 and 19 pounds, give or take.

However, most of his growth will occur between the ages of 4 and 9 months. When your puppy reaches the age of nine months, he may weigh between 25 and 42 pounds.

By this point, he should still grow, but keep in mind that American Staffordshire Terriers are not large dogs.

American Staffordshire Terrier Adult Weight 

At 18 months of age, your American Staffordshire Terrier is considered an adult. He should stop growing at this stage, albeit he is a stocky breed, so you must be cautious of excessive weight gain.

A female American Staffordshire Terrier weighs between 40 and 70 pounds on average, whereas a male American Staffordshire Terrier weighs between 50 and 70 pounds, depending on the dog's genetics.

How To Weigh Your American Staffordshire Terrier Puppy?

Utilization of a Personal Scale

To make things easy for you, you can start using a personal, digital bathroom scale, the same one you use to weigh yourself, but keep in mind that reading from a bathroom scale will not be accurate as using a puppy scale! It may work reasonably well for larger puppies or puppies that are already large, but it will be useless for little, newborn puppies.

If you do not have a scale for weighing pups, you may first attempt to weigh yourself using a personal digital scale. Once your weight has been recorded, you can step on it while holding your newborn dog. Subtract your previous weight without the puppy from this second weight. The difference will give you the puppy's weight, although it may not be very accurate.

Using a Puppy Scale

Princess Ekaterina Dmitrievna Golitsyna's portrait

If you want reliable readings where every ounce counts, the best solution is to use a scale that is not intended for personal use. While a postal scale or a digital kitchen scale may suffice, many breeders prefer to use baby scales.

If you are fortunate enough to have a scale capable of weighing puppies and your puppies are calm, you can just place them on the scale.

Remember a newborn puppy may be apprehensive about being removed from his usual surroundings and may desire to be as near to his mother and littermates as possible. It is therefore normal for your newborn puppies to hate being lifted by you and placed on a cold scale.

What Is An American Staffordshire Terrier’s Neck Size?

To measure your American Staffordshire Terrier's neck, take a loose measurement around the dog's neck where the collar normally sits with a soft tape measure. Two fingers should be inserted between the dog's neck and the measuring tape. This will provide your dog with room for the dog collar to be snug but not too tight. If you do not use two fingers, double your measurement. Amstaff is typically between 14 and 20 inches in height.

How Big Do American Staffordshire Terriers Get?

The American Staffordshire Terrier dog breed is classified as a medium to large breed in general. They are robust and stocky, but lack lengthy legs and are short in stature.

The average female American Staffordshire Terrier weighs between 40 and 70 pounds, while the average male weighs just slightly more.

Factors That Affect American Staffordshire Terrier Puppy Growth 

Genetics

A few things influence the size of an American Staffordshire Terrier puppy.

The first is genetic. If you look at the parents of your puppy, you can get a fair idea of his final size.

While males of this breed are slightly larger, the difference in size is negligible and should not have a significant effect on your puppy's growth.

Diet & Nutrition

Nutrition is critical for a developing puppy. You want to ensure that your dog lives a long and healthy life.

Nutrition may not impair your dog's growth, but it may wreak havoc on his joints. If you overfeed your dog, for instance, his expanding joints and bones will have an excessive amount of weight to bear.

Assure that your dog receives a balanced and nutritious diet. Examine the ingredients label on your dog's food to determine what you're feeding him.

Physical Activity & Health

Physical activity is an excellent strategy to prevent your dog from becoming overweight and causing damage to his developing bones.

However, avoid over-exercising young puppies, since this can damage to their developing bodies. Similarly, keeping your dog healthy will ensure that his body matures to be as strong on the outside as it is on the inside.

Common Questions about American Staffordshire Terrier

At What Age Is An American Staffordshire Terrier Fully Grown?

Although all pups are considered adults once they reach the age of one year, puppies continue to grow in height and size as their bones mature, which takes between six and twenty-four months.

How Long Are American Staffordshire Terriers Pregnant?

Staffy pregnancy lasts approximately 65 days. As with humans, there is no such thing as a continuous length of pregnancy, and hence the figures are only estimations. The first day should begin on the day they last mated. As I previously stated, this time period is referred to as the gestation period.

Labor begins at the end of the gestation period. The labor period is divided into 3 stages.

The First Stage

The initial stage lasts between 12 and 24 hours and is frequently imperceptible. Throughout the first stage, contractions in the uterus's muscular wall will increase in frequency and power, but there will be no visible contraction. Rather than that, keep an eye out for the following signs of labor in your Staffy:

• Restlessness
• Change in behavior and disposition
• Refusal to eat
• Reclusive behavior
• Panting
• Intermittent nesting
• Vomiting
• Clear vaginal discharge

Second Stage

This is the second stage, during which puppies are born. This period normally lasts between one to twenty-four hours, during which the bitch delivers one puppy at a time. Each pup's delivery should take no more than one or two minutes and occurs around every 30 to 60 minutes. As a result, it's beneficial to be aware of the overall number of puppies expected. Staffies often give birth to between four and eight puppies.

Third Stage

At the third stage, the dogs deliver the placenta. The second and third stages occur concurrently, and the third stage is complete when the entire placenta is removed. This typically occurs immediately after the completion of the second stage.

You should contact your veterinarian if your Staffy's labor lasts over twenty-four hours or if the interval between puppies is longer than two hours. This could be a symptom of a serious problem, putting both the unborn puppies and the female Staffy's life at risk.

How Many Puppies Do American Staffordshire Terriers Have?

The average American Staffordshire Terrier litter size is between five and 10 puppies. Assume the outcome will be a huge litter. Ten puppies is a more improbable but still conceivable scenario.

What Is The Life Expectancy Of American Staffordshire Terriers?

If you own or are considering adopting an American Staffordshire Terrier, it is critical to understand the American Staffordshire Terrier's life expectancy when caring for these dogs.

American Staffordshire Terrier dogs have an average life expectancy of 12-14 years, according to lifetime research.

How Much Does It Cost To Own An American Staffordshire Terrier?

A Staffordshire Bull Terrier costs on average $2000 in the United States. Staffies are priced between $1000 and $3000. It varies according to the breeder's reputation, location, pedigree, age, and gender of the dog. If the Staffordshire Bull Terrier breed is uncommon in your area, the price may be slightly more.

How To Help Your American Staffordshire Terrier Lose Weight If He Is Overweight

If your American Staffordshire Terrier is overweight, obese, or underweight, they are not the appropriate weight. Obesity in dogs can lead to knee and back problems, heart illness, a shorter lifespan, and respiratory difficulties.

As a result, for proper weight, feed your American Staffordshire Terrier healthy food. Reduce the number of carbohydrates in your dog's diet because they can be stored as fat in the body.

Maintain a well-balanced diet and schedule your dog's mealtimes to prevent hunger. Mealtimes are also important for maintaining metabolism and meal utilization in the body.

Mealtimes regularly discourage them from scavenging around the house. Consult your veterinarian for advice on how to help your Airedale terrier gain or lose weight.

Conclusion on American Staffordshire Terrier Growth Chart

American Staffordshire Terriers are an excellent choice for a dog breed. They are affectionate, lively, and devoted to their owners.

Knowing what to expect from your developing American Staffordshire Terrier puppy is critical for ensuring that your dog not only has a loving home but also long, healthy life.

If you are concerned that your puppy is not growing properly, the best course of action is to bring him in for a veterinarian visit. Your veterinarian will be able to either assuage your fears or offer you the information to get your pooch back on track.

Frequently Asked Questions: