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Male & Female American Staffordshire Terrier Weights & Heights by Age

Written by: Arlene D.
| Published on August 10, 2023

The American Staffordshire Terrier, often referred to as the AmStaff, is renowned for its muscular build and affectionate nature. But how do these powerful pups grow, and what size can a new owner expect them to reach? Understanding the average weights and heights of American Staffordshire Terrier puppies at various stages of their development is essential for their overall health and well-being. Whether you’re a proud new AmStaff parent or considering adding one to your family, this guide offers a comprehensive overview of their growth trajectory, ensuring you’re well-informed about their physical evolution.

Male American Staffordshire Terrier Weights & Heights by Age

The following chart contains the average weights and heights of a male American Staffordshire Terrier from newborn to 3 years of age. Please note these are only averages. Always consult with your veterinarian if you have any concerns about your American Staffordshire Terrier’s growth.

Age Average Weight (pounds) Average Weight (kg) Average Height (inches) Average Height (cm)
Newborn 0.5-1.0 0.23-0.45 3-4 7.6-10.2
1 Month 5-8 2.3-3.6 5-7 12.7-17.8
2 Months 10-15 4.5-6.8 8-11 20.3-27.9
3 Months 15-25 6.8-11.3 10-13 25.4-33
4 Months 20-35 9.1-15.9 12-16 30.5-40.6
5 Months 30-45 13.6-20.4 14-18 35.6-45.7
6 Months 40-55 18.1-24.9 16-20 40.6-50.8
7 Months 45-60 20.4-27.2 17-21 43.2-53.3
8 Months 50-65 22.7-29.5 18-22 45.7-55.9
9 Months 55-70 24.9-31.8 18-23 45.7-58.4
10 Months 58-73 26.3-33.1 19-23.5 48.3-59.7
11 Months 60-75 27.2-34 19-24 48.3-61
12 Months 62-77 28.1-34.9 19.5-24.5 49.5-62.2
2 Years 65-80 29.5-36.3 20-25 50.8-63.5
3 Years 65-88 29.5-39.9 21-25 53.3-63.5


Female American Staffordshire Terrier Weights & Heights by Age

The following chart contains the average weights and heights of a female American Staffordshire Terrier from newborn to 3 years of age. Please note these are only averages. Always consult with your veterinarian if you have any concerns about your American Staffordshire Terrier’s growth.

Age Weight (lbs) Weight (kg) Height (inches) Height (cm)
Newborn 0.4-0.8 0.18-0.36 1.5-2.5 3.8-6.4
1 month 4-8 1.8-3.6 3.5-5.5 8.9-14.0
2 months 8-18 3.6-8.2 5-8 12.7-20.3
3 months 18-28 8.2-12.7 7-11 17.8-28.0
4 months 28-38 12.7-17.2 9-13 22.9-33.0
5 months 32-45 14.5-20.4 11-15 28.0-38.1
6 months 35-50 15.9-22.7 12-17 30.5-43.2
7 months 38-55 17.2-25 13-18 33.0-45.7
8 months 42-58 19.1-26.3 14-19 35.6-48.3
9 months 45-62 20.4-28.1 15-20 38.1-50.8
10 months 47-65 21.3-29.5 15.5-20.5 39.4-52.1
11 months 50-68 22.7-30.8 16-21 40.6-53.3
12 months 52-70 23.6-31.8 16.5-21.5 41.9-54.6
2 years 55-75 25-34 17-22 43.2-55.9
3 years 56-77 25.4-35 17.5-22.5 44.5-57.2

These tables are based on general guidelines and can vary greatly depending on individual dogs. Always consult with a veterinarian or professional breeder for more specific information about your pet’s growth and development.

FAQs about an American Staffordshire Terrier Puppy’s Growth and Development

    1. How big will my American Staffordshire Terrier puppy get?
      Your American Staffordshire Terrier’s final size will depend on genetics, diet, and overall health. On average, adult males weigh between 65-88 pounds and females between 45-68 pounds.
    2. When will my puppy stop growing?
      Most American Staffordshire Terriers reach their full height by 18-24 months but might fill out in muscle and weight until their third year.
    3. Why is my puppy smaller/larger than the breed average?
      Dogs, like people, can vary in size. Genetics play a huge role, but diet, health, and environmental factors can also affect growth.
    4. How much should I feed my growing puppy?
      The right amount depends on your puppy’s age, weight, and activity level. Always check the dog food label and consult your vet for guidance.
    5. Do male and female American Staffordshire Terriers grow at the same rate?
      Generally, males are larger and might grow at a slightly different rate. They often end up heavier and taller than females.
    6. When should I switch from puppy food to adult dog food?
      Typically, it’s around the one-year mark, but larger breeds like American Staffordshire Terriers might benefit from staying on puppy food longer to support their growth.
    7. Is it normal for my puppy’s legs to look too long?
      Puppies often have growth spurts where parts of their body grow faster than others. They’ll likely grow into their legs as they mature.
    8. What if my puppy isn’t gaining weight?
      If you’re concerned about your puppy’s weight or growth, it’s crucial to consult a vet to rule out any potential health issues.
    9. How can I ensure my American Staffordshire Terrier grows to its full potential?
      A balanced diet, regular exercise, routine vet check-ups, and plenty of love and care will help ensure optimal growth.
    10. Can I exercise my puppy while they’re still growing?
      Yes, but be mindful of their joints. Short, regular play sessions and walks are better than long, strenuous activities.
    11. Are growth spurts normal?
      Absolutely. Puppies will often have periods of rapid growth followed by slower growth phases.
    12. Why are my puppy’s paws so big?
      Large paws are a common characteristic in puppies and often indicate how large they might become as adults.
    13. What are the common health concerns for growing American Staffordshire Terriers?
      Hip dysplasia, heart conditions, and certain hereditary diseases can affect this breed. Regular vet check-ups are crucial.
    14. Can neutering or spaying affect my puppy’s growth?
      Altering your dog can potentially impact its growth plates and final size. Always discuss the best timing with your vet.
    15. My older dog grew differently than my new puppy; why?
      Each dog is an individual, and factors like genetics, diet, environment, and health can all impact growth.
    16. Is raw food good for my growing American Staffordshire Terrier?
      Some owners believe in the benefits of a raw diet. However, it’s essential to ensure it’s nutritionally balanced, especially for growing puppies. Consult your vet before making dietary changes.
    17. How can I tell if my puppy is overweight?
      You should be able to feel but not see your puppy’s ribs. If you’re unsure, a vet can provide guidance on ideal weight.
    18. Should I be concerned if my puppy is taller than the breed standard?
      Individual variance is typical, and being taller doesn’t necessarily indicate a health problem. However, always keep open communication with your vet about any growth concerns.
    19. Can supplements help my puppy grow?
      Unless recommended by a vet due to a specific deficiency, most puppies get the nutrients they need from high-quality dog food.
    20. How often should I track my puppy’s growth?
      It can be helpful to weigh and measure your puppy monthly to ensure they’re on the right track. Any sudden changes or concerns should be discussed with a vet.

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