American Bully Growth Chart — Weight and Size by Age
American Bully Growth Chart — Overview
The american bully growth chart varies significantly by class. A Pocket American Bully and an XXL American Bully follow completely different growth timelines and reach very different final sizes. Understanding your puppy’s class helps set accurate expectations for how big they will get and when.
American Bullies go through two distinct growth phases — height growth (driven by growth plate development) and body mass growth (muscle and bulk). Height typically stops between 12 and 16 months. Body mass continues developing for 6 to 12 months after that.
Pocket American Bully Growth Chart
Pocket American Bullies stand under 17 inches at the withers at maturity. Despite their compact size they carry the same heavy bone and muscular build as larger classes in a smaller frame.
| Age | Male Weight | Female Weight | Height Range |
|---|---|---|---|
| 8 weeks | 4–6 lbs | 3–5 lbs | 6–8 inches |
| 3 months | 10–15 lbs | 8–12 lbs | 9–11 inches |
| 6 months | 20–30 lbs | 16–24 lbs | 12–15 inches |
| 12 months | 28–40 lbs | 22–32 lbs | 14–17 inches |
| Full grown (18–24 mo) | 30–50 lbs | 25–40 lbs | Under 17 inches |
Standard American Bully Growth Chart
Standard American Bullies stand 17 to 20 inches for females and 17 to 20 inches for males at maturity. This is the original ABKC registered size class.
| Age | Male Weight | Female Weight | Height Range |
|---|---|---|---|
| 8 weeks | 6–10 lbs | 5–8 lbs | 7–10 inches |
| 3 months | 18–25 lbs | 14–20 lbs | 11–14 inches |
| 6 months | 40–60 lbs | 32–48 lbs | 14–17 inches |
| 12 months | 60–80 lbs | 48–65 lbs | 16–19 inches |
| Full grown (18–24 mo) | 65–90 lbs | 55–75 lbs | 17–20 inches |
XL American Bully Growth Chart
XL American Bullies stand over 20 inches at the withers for females and over 21 inches for males. They are the most popular class and take longer to fully mature than Standard or Pocket dogs.
| Age | Male Weight | Female Weight | Height Range |
|---|---|---|---|
| 8 weeks | 8–14 lbs | 7–11 lbs | 8–11 inches |
| 3 months | 22–35 lbs | 18–28 lbs | 12–15 inches |
| 6 months | 55–80 lbs | 45–65 lbs | 15–19 inches |
| 12 months | 85–110 lbs | 70–90 lbs | 19–22 inches |
| Full grown (18–24 mo) | 90–130 lbs | 75–105 lbs | 20–23 inches |
XXL American Bully Growth Chart
XXL American Bullies exceed the XL standard in height and are the heaviest class. They are the slowest to fully mature — do not judge an XXL’s final size until at least 24 months.
| Age | Male Weight | Female Weight |
|---|---|---|
| 8 weeks | 10–16 lbs | 8–13 lbs |
| 3 months | 28–42 lbs | 22–34 lbs |
| 6 months | 65–95 lbs | 52–75 lbs |
| 12 months | 100–130 lbs | 80–105 lbs |
| Full grown (24–30 mo) | 120–160 lbs | 95–130 lbs |
An American Bully at 12 months has usually reached full height but may only be at 70 to 80 percent of its adult body weight. Never judge a Bully’s final size at 12 months — wait until at least 18 months for accurate assessment.
Factors That Affect Growth Rate
Bloodlines
The single strongest predictor of final size is bloodline. XL bloodlines consistently produce larger dogs than Standard lines even within the same litter. At Majestic Bully Puppies every puppy comes from champion XL and XXL bloodlines — Razor Edge and Gottiline genetics known for consistent size and structure.
Nutrition
Proper diet during the first 18 months is critical for reaching genetic potential. Underfeeding stunts growth. Overfeeding causes rapid weight gain that stresses developing joints. See our American Bully Diet guide for exact feeding recommendations by age and size.
Exercise
Avoid high-impact exercise like running on hard surfaces or jumping before growth plates close — typically around 12 to 14 months. Premature high-impact activity can permanently affect bone development and final structure.
View our available XL and XXL puppies on the XL American Bully For Sale page and the XXL American Bully For Sale page.
American Bully Puppies For Sale — Majestic Bully Puppies
Champion bloodline American Bully puppies available now. All classes, all colors, ships to all 50 states.