How Big Does an XL Bully Get?

The American Bully XL is one of the largest classes of the American Bully breed, known for its muscular frame, wide chest, and powerful presence. But one of the most common questions potential owners ask is: How big does an XL Bully get?

In this guide, we’ll break down the average weight and height of XL Bullies, what’s considered healthy, and why extreme sizes are often misleading.

Average Size of an XL Bully

• Weight Range: Most XL Bullies fall between 70–120 pounds depending on gender, genetics, and build.

• Males: Generally 100+ pounds, with 120 lbs being a strong, healthy size.

• Females: Usually lighter, averaging 70–100 pounds.

A true XL Bully is heavy, muscular, and tall — but not overweight.

Height Standards for XL Bullies

According to ABKC standards:

• Males: At least 20–23 inches at the withers (shoulders).

• Females: At least 19–22 inches.

Anything below this falls into the Standard or Pocket classes of the American Bully.

When Big Becomes Too Big

While XL Bullies can reach 120–140 pounds without issue, dogs marketed as 150+ pounds often raise red flags.

• Overweight Dogs: Some breeders overfeed their dogs to advertise them as “giants,” but this extra weight is simply unhealthy fat.

• Mixed Breeding: Dogs that exceed 150+ pounds are almost always mixed with other large breeds such as Mastiffs or Bulldogs. At that point, they are no longer pure American Bullies.

XL Bully Growth Stages

• Puppy Stage (0–6 months): Rapid growth, gaining both height and muscle.

• Adolescent Stage (6–18 months): They begin to fill out, gaining bulk and chest width.

• Adult Stage (18–36 months): Most XL Bullies don’t fully mature until around 2–3 years old, when they reach peak size and muscle.

Healthy Weight vs. Exaggeration

The goal of breeding American Bully XLs is not just to create the biggest dog possible — it’s to create a balanced, muscular, athletic dog that reflects the breed standard.

Signs your XL Bully is a healthy size:

• Muscles are visible under the coat.

• Ribs can be felt (but not sticking out).

• Dog has energy and stamina, not sluggishness.

Final Thoughts

So, how big does an XL Bully get?

• Healthy Range: 70–120 pounds (some reaching 140).

• Over 150 pounds: Likely overweight or mixed with another giant breed.

An authentic XL Bully is impressive without being exaggerated. If you’re considering buying one, focus on structure, temperament, and health — not just numbers on the scale.

Frequently Asked Questions About XL Bullies

Q: How big does an XL Bully get full grown?
A: Most XL Bullies reach 100–120 pounds at full maturity, with some healthy dogs reaching up to 140 pounds. Anything beyond that is usually overweight or mixed with another breed.

Q: At what age is an XL Bully fully grown?
A: XL Bullies typically reach their full height by 12–18 months, but they continue filling out with muscle until around 2–3 years old.

Q: What’s the difference between an XL Bully and XXL Bully?
A: “XXL Bully” is more of a marketing term than an official class. The ABKC only recognizes Pocket, Standard, Classic, and XL. Any dog advertised as XXL is usually just a large XL, or mixed with another giant breed.

Q: Is a 150-pound Bully real?
A: A dog that size is almost always a mix. True American Bullies rarely, if ever, exceed 140 pounds without being overweight or bred with Mastiff-type dogs.

Q: How do I know if my XL Bully is overweight?
A: A healthy Bully should look muscular and athletic, not bloated. You should be able to feel the ribs without seeing them, and your dog should move easily without tiring quickly.

Q: Are bigger XL Bullies worth more?
A: Not necessarily. Responsible breeders focus on structure, health, and temperament, not exaggerated size. Many oversized dogs are unhealthy or mixed breeds.

Look at Big Dawg Bossys Tasmanian Devil , he is not overweight and weights 128-130 pounds, you can even see his abs.