How Big Do XL Pitbulls Get? Complete Size, Weight & Care Guide

Quick Answer: XL Pitbulls typically reach 19-23 inches tall and weigh 75-120 pounds when fully grown (2.5-3 years). Males average 90-120 lbs, females 75-100 lbs. These are muscular, powerful dogs requiring experienced ownership, significant space, and substantial financial commitment.

Understanding XL Pitbulls vs XL American Bullies

The Terminology Problem

Here’s what you need to know upfront: “XL Pitbull” isn’t an official breed recognized by major kennel clubs like the AKC or UKC. When people use this term, they’re usually referring to one of two things:

XL American Bully (ABKC recognized class):

• Purpose-bred for size and mass
• Shorter backs, wider chests, blockier heads
• Distinct breed with established standards
• Weight: 80-150+ lbs typical

Large American Pit Bull Terrier:

• Athletic, lean build
• Taller, less bulky
• True APBT rarely exceeds 70 lbs
• Not the same dog

For this article, we’re primarily discussing XL American Bullies, since that’s what most people mean when they say “XL Pitbull.” These dogs are significantly larger, heavier, and structurally different from standard APBTs.

Breed Standard Reference

According to the American Bully Kennel Club (ABKC), the XL American Bully class requires:

• Males: Over 20 inches (51 cm) at withers
• Females: Over 19 inches (48 cm) at withers
• No upper height limit specified
• Must maintain proper proportion and structure

Average Size and Weight

Male XL American Bully

Height: 20-23 inches (51-58 cm) at the withers

• Exceptional bloodlines may reach 24-25 inches
• Measured at the shoulder, not the head or ears

Weight: 90-120 pounds (41-54 kg)

• Well-conditioned, muscular weight
• Some lines exceed 130 lbs
• Quality over quantity matters

Female XL American Bully

Height: 19-22 inches (48-56 cm)

• Typically 1-2 inches shorter than males
• Still substantial and powerful

Weight: 75-100 pounds (34-45 kg)

• Females are sleeker but not weak
• Better agility in many cases

Size Comparison Chart

Dog Breed	Height	Weight	Build
XL American Bully (Male)	20-23″	90-120 lbs	Bulky, wide
XL American Bully (Female)	19-22″	75-100 lbs	Muscular, compact
Standard American Bully	17-20″	65-85 lbs	Medium bulk
Standard APBT	17-19″	35-60 lbs	Athletic, lean
Pocket Bully	14-17″	30-50 lbs	Compact, wide

Understanding Body Composition

Important distinction: Muscle is denser than fat, not heavier. A pound of muscle and a pound of fat both weigh one pound—but muscle takes up less space.

A lean, muscular 100-lb XL Bully is healthier than a soft, overfed 100-lb one. You should:

• Feel ribs under light finger pressure
• See a waist when viewed from above
• Notice an abdominal tuck from the side
• Observe muscle definition in legs and shoulders

Growth Timeline and Development

8-12 Weeks (Puppy Stage)

• Weight: 15-25 lbs
• All paws and wrinkles
• Rapid bone development begins
• Critical socialization window

3 Months

• Weight: 25-35 lbs
• Still clumsy, filling out
• Teething and exploring everything
• First growth spurt

6 Months

• Weight: 50-70 lbs
• Significant muscle development
• Sexual maturity approaching
• Coordination improving

12 Months

• Weight: 70-90 lbs
• Height mostly achieved
• Still gangly in appearance
• Mental maturity developing

18 Months

• Weight: 80-105 lbs
• Chest beginning to drop
• Muscle mass increasing
• Adult coat coming in

2-3 Years (Physical Maturity)

• Weight: 90-120+ lbs (males), 75-100 lbs (females)
• Full chest depth achieved
• Head fully matured
• Peak physical condition

Important Note: XL Bullies stop growing in height around 12-14 months but continue filling out until 2.5-3 years old. The chest “drops,” the head broadens, and muscle mass continues developing throughout this period.

Visual Growth Progression

While we can’t show images here, a typical XL Bully puppy transformation looks like:

• 3 months: Big paws, narrow chest, baby face
• 6 months: Gangly teenager, developing muscle
• 12 months: Nearly full height, lean build
• 24+ months: Thick chest, mature head, full mass

What Affects Their Size

1. Genetics and Bloodline

Genetics is the primary determinant of size. Two XL parents don’t guarantee an XL puppy, but the probability is significantly higher.

What breeders select for:

• Bone density and frame size
• Muscle mass potential
• Head size and width
• Overall proportion

Red flag: Breeders claiming “XXL” or “mega” sizes often prioritize extremes over health. Responsible breeders focus on structure, movement, and health alongside size.

2. Nutrition and Diet

What they need:

• High-quality protein (25-30% minimum)
• Balanced fats for joint and coat health
• Calcium and phosphorus in correct ratios
• Age-appropriate calorie density

What to avoid:

• Overfeeding during puppyhood (causes orthopedic issues)
• Excessive protein supplementation
• Free-feeding (leads to obesity)
• Generic low-quality kibble

Feeding costs: Expect $80-150/month for premium food alone.

3. Exercise and Physical Activity

Muscle develops through movement, not food alone. XL Bullies need:

Daily requirements:

• 60-90 minutes of exercise
• Mix of walking, running, and play
• Weight pulling or resistance work (for adults)
• Mental stimulation through training

Exercise builds:

• Muscle definition
• Bone density
• Joint strength
• Cardiovascular health

Warning: Avoid high-impact exercise (jumping, stairs) during puppyhood. Growth plates are vulnerable until 12-18 months.

4. Health and Hormones

Early spaying/neutering effects: Research indicates early sterilization (before 12 months) can affect growth plates, potentially resulting in:

• Slightly taller but less dense dogs
• Delayed growth plate closure
• Increased joint disorder risk

Recommendation: Many veterinarians now suggest waiting until physical maturity (12-18 months) for large breeds, though this varies by individual health factors.Thyroid health: Hypothyroidism can affect growth, weight, and energy. Reputable breeders test breeding stock.

Physical Characteristics

Head and Skull

XL American Bullies are known for:

• Large, blocky heads
• Wide skull with pronounced cheek muscles
• Short, broad muzzle
• Strong, well-defined jaw

Structure matters: An oversized head without proper neck and shoulder structure creates health problems.

Chest and Body

Ideal characteristics:

• Deep, wide chest (not barrel-shaped)
• Well-sprung ribs
• Thick, muscular neck
• Short to medium back length
• Compact, powerful build

Width: The chest should be wide enough that front legs are set apart, but not so wide it impairs movement.

Bone Density and Frame

XL Bullies carry heavy bone structure, which contributes significantly to their weight. Look for:

• Thick, straight leg bones
• Large, compact feet
• Strong, level topline
• Balanced front and rear angulation

Athletic vs Bulky Builds

Not all XL Bullies look identical:

Athletic type:

• Leaner muscle definition
• Better movement and agility
• Longer working life
• Often healthier

Bulky type:

• Extreme mass
• Wider front
• More impressive appearance
• Higher health risks if taken to extremes

Both can be correct if the dog moves soundly, breathes easily, and maintains healthy body condition.

Health Considerations for Large Dogs

Size-Related Health Issues

Orthopedic concerns:

• Hip dysplasia (estimated 30-50% incidence in bully breeds)
• Elbow dysplasia
• ACL/CCL tears
• Patellar luxation
• Arthritis (earlier onset in large dogs)

Cardiovascular issues:

• Dilated cardiomyopathy
• Heart murmurs
• Decreased lifespan correlating with increased size

Respiratory challenges:

• Brachycephalic issues (if muzzle is too short)
• Exercise intolerance in extreme builds
• Heat sensitivity

Lifespan Reality

Hard truth: Larger dogs live shorter lives.

• Standard APBT: 12-16 years typical
• XL American Bully: 8-12 years typical
• Extreme XXL builds: Often 6-10 years

Factors affecting longevity:

• Maintaining lean body condition
• Regular veterinary care
• Genetic health testing
• Avoiding extreme structural exaggeration

Health Screening Recommendations

Before breeding or purchasing:

• OFA hip and elbow certifications
• Cardiac evaluation
• Thyroid panel
• Genetic testing for known conditions
• Temperament evaluation

Ongoing care:

• Annual vet exams
• Joint supplements (glucosamine, chondroitin)
• Weight management
• Early intervention for issues

Expected Veterinary Costs

Routine annual care: $500-800

• Exam, vaccines, preventatives

Emergency fund: Maintain $3,000-5,000

• Orthopedic surgeries: $3,000-6,000+
• Emergency care: $1,500-5,000+

Pet insurance: $80-150/month for comprehensive coverage

• Many policies exclude breed-specific conditions
• Consider coverage before issues develop

Daily Care Requirements

Space Needs

Minimum recommendations:

• Not ideal for small apartments (under 700 sq ft)
• Medium apartments (700-1000 sq ft): Possible with dedicated owner
• Houses with yards: Ideal
• Access to outdoor exercise: Essential

Reality check: You don’t need a mansion, but a 110-lb dog in a studio apartment is challenging for everyone involved.

Exercise Requirements

Daily minimum:

• 60-90 minutes of physical activity
• 2-3 walks or play sessions
• Mental stimulation through training

Ideal activities:

• Structured walks on leash
• Weight pulling (conditioned adults)
• Swimming (excellent low-impact exercise)
• Flirt pole work
• Obedience training

What to avoid:

• Dog parks (potential dog aggression)
• Off-leash areas without excellent recall
• Extreme heat exercise
• High-impact activities during growth

Training and Handling

Non-negotiable reality: A 100+ lb dog with poor manners is dangerous.

Training priorities:

• Leash manners (essential)
• Solid recall
• “Leave it” command
• Door manners
• Impulse control

Physical strength considerations:

• You must be able to physically control your dog
• Children cannot walk these dogs safely
• Consider professional training assistance

Training costs:

• Group classes: $150-300
• Private sessions: $75-150/hour
• Board and train: $2,000-5,000

Feeding and Nutrition

Daily food requirements:

• Adult male: 4-6 cups premium kibble
• Adult female: 3-5 cups premium kibble
• Split into 2 meals
• Adjust based on activity level

Monthly food costs:

• Premium kibble: $80-120
• Raw diet: $150-250
• Supplements: $30-60

Special considerations:

• Large breed formulas (joint support)
• Raised feeding bowls (bloat prevention debated)
• Slow-feed bowls for fast eaters

Grooming and Maintenance

Low maintenance compared to some breeds:

• Weekly brushing
• Monthly baths
• Regular nail trimming
• Ear cleaning
• Dental care

Costs:

• DIY: $20-40/month
• Professional: $60-100/visit

Choosing the Right Dog for Your Lifestyle

Honest Self-Assessment Questions

Before getting an XL American Bully, ask:

1. Can I physically control a 100+ lb dog?
2. Do I have $2,000-3,000 annually for care?
3. Am I home enough to provide attention and exercise?
4. Is my housing stable and dog-friendly?
5. Do I have experience with powerful breeds?
6. Am I prepared for potential dog aggression?
7. Can I commit for 10+ years?

If you answered no to any: Reconsider or wait until circumstances change.

Family Considerations

With proper training and socialization:

• Excellent with children (gentle giants)
• Loyal and protective
• Affectionate and people-oriented

Critical requirements:

• Supervise all child interactions
• Teach children proper dog behavior
• Establish dog’s place in family hierarchy
• Provide escape space for dog

Not ideal for:

• First-time dog owners
• Families with very small children (toddlers)
• Homes without consistent routines
• People wanting a low-maintenance pet

Living Situations

Apartments:

• Possible but challenging
• Daily outdoor exercise is non-negotiable
• Noise considerations (some are vocal)
• Neighbor relations matter
• Check breed restrictions

Houses with yards:

• Ideal setup
• Secure 6-foot fencing minimum
• Supervised outdoor time
• Still need walks (yards aren’t enough)

Urban vs Rural:

• Urban: More challenges, need excellent training
• Suburban: Generally easier
• Rural: Often ideal if properly contained

Lifestyle Compatibility

Good match for:

• Active individuals/families
• Experienced dog owners
• Those with flexible schedules
• People wanting a companion for activities

Poor match for:

• Frequent travelers
• Working 12+ hour days
• Apartment dwellers without dedication
• Those wanting an “easy” dog

Male vs Female XL Pitbull Size Differences

Physical Differences

Males:

• Bulkier overall build
• Broader heads
• Thicker necks
• More mass in chest and shoulders
• 10-20 lbs heavier on average

Females:

• Sleeker appearance
• More agile movement
• Slightly narrower frame
• Often better proportioned

Both are:

• Powerful and substantial
• Require serious training
• Capable of high strength

Behavioral Differences

Males:

• Stay “goofy” longer (mental maturity slower)
• More likely to test boundaries
• Higher dog-aggression tendency
• More marking behavior

Females:

• Mentally mature faster
• Often more focused in training
• Can be more territorial
• Heat cycles if not spayed (every 6-8 months)

Individual variation matters more than sex in many cases.

Common XL Pitbulls Myths Debunked

Myth #1: “Bigger Means Better”

Reality: Size extremes often compromise health and longevity.

• Extreme sizes have shorter lifespans
• Movement issues increase with size
• Breeding for maximum size often neglects health
• Function should match form

What actually matters:

• Proper structure and proportion
• Sound movement
• Good health
• Balanced temperament

Myth #2: “XL Pitbulls are More Aggressive”

Reality: Size doesn’t determine temperament.

• Aggression comes from genetics, training, socialization
• Many XLs are gentle and calm
• Smaller dogs can be more aggressive (less consequence)
• Responsible breeding includes temperament testing

The real issue: A poorly trained large dog is more dangerous than a poorly trained small dog due to capacity for harm, not inherent aggression.

Myth #3: “They Need Huge Amounts of Food”

Reality: They need appropriate amounts of quality food.

• Overfeeding creates fat, not muscle
• Muscle is built through exercise
• More food ≠ bigger dog (genetics determine size)
• Excess calories cause health problems

Myth #4: “Social Media Size is Real”

Reality: Camera angles, chains, and tricks exaggerate size.

• Wide-angle lenses make dogs look bigger
• Heavy chains add visual bulk
• Forced perspective (dog close, person far)
• Photo editing and filters

Actual measurements don’t lie: Most “XXL” dogs are 23-25 inches tall—big, but not mythical.

Myth #5: “They’re Just Like Regular Pitbulls”

Reality: XL American Bullies are structurally different.

• Different breed (American Bully vs APBT)
• Different build and purpose
• Different care requirements
• Different historical development

Treating them as identical ignores important differences.

Legal and Insurance Considerations

Breed-Specific Legislation (BSL)

Critical to check:

• Local city/county ordinances
• State laws
• Rental property restrictions
• HOA regulations

Some areas ban or restrict:

• “Pit bull type” dogs (often includes Bullies)
• Dogs over certain weight
• Dogs with specific characteristics

Consequences of violation:

• Fines
• Forced rehoming
• Euthanasia in extreme cases

Resources:

• Check local animal control websites
• Consult rental agreements before adopting
• Join local bully breed advocacy groups

Homeowner’s/Renter’s Insurance

Common issues:

• Many insurers exclude “pit bull type” breeds
• Some charge higher premiums
• Others require special liability coverage

What to do:

• Disclose your dog honestly
• Shop for breed-friendly insurers
• Consider umbrella liability policy
• Document training and good behavior

Pet-friendly insurance companies:

• State Farm (generally)
• USAA
• Amica
• Nationwide

Important: Never lie about your dog’s breed. Claims can be denied, and coverage cancelled.

Liability Considerations

Reality: Large, powerful dogs carry higher liability.

Protective measures:

• Secure fencing (6+ feet)
• “Beware of Dog” signs (laws vary)
• Never leave tehe dog unsupervised around children
• Maintain control in public
• Document training and socialization

Consider: Additional liability coverage (umbrella policy) of $1-2 million.

Finding a Responsible XL Pitbulls Breeder

Red Flags to Avoid

Run from breeders who:

• Market “XXL” or “mega” extremes
• Don’t health test parents
• Won’t let you visit
• Have multiple litters available
• Breed dogs under 2 years old
• Can’t provide health certifications
• Sell on Craigslist or Facebook
• Price significantly below market ($500-1500)

What Responsible Breeders Do

Green flags:

• OFA/PennHIP health certifications
• Temperament testing
• Limited breeding (1-2 litters/year)
• Lifetime support for puppies
• Contracts with health guarantees
• Screening potential buyers
• Focus on health and temperament
• Involvement in breed community

Expected costs:

• Pet quality: $2,000-4,000
• Show quality: $4,000-8,000+

Remember: The initial cost is the smallest expense over the dog’s lifetime.

Conclusion

XL American Bullies—the dogs most people call “XL Pitbulls”—are impressive animals reaching 19-23 inches tall and 75-120 pounds. They’re powerful, muscular, and require serious ownership commitment.

The reality:

• They’re not the biggest dogs in existence
• Size extremes compromise health
• Lean, fit dogs live longer
• Training is essential
• Costs are substantial
• Not suitable for everyone

The goal isn’t Instagram fame: It’s a healthy, well-structured, properly trained companion that moves well, breathes easily, and lives a full life.

Size is impressive. Health is everything. Temperament matters most.

If you’re considering one of these dogs, do your homework, find a responsible breeder, prepare for the financial and time commitment, and prioritize the dog’s well-being over bragging rights.