French Bulldogs are one of the most beloved companion breeds worldwide, known for their compact, muscular build and expressive “bat ears.” From selecting the optimal food for French Bulldogs that fuels healthy growth to understanding quirky traits like why French bulldogs have such short French bulldog tails, every aspect of their care matters. But when does a French Bulldog stop growing? Many new owners wonder how long their puppy will continue to gain height and weight, and what milestones to expect along the way. In this comprehensive guide updated for 2025, we’ll walk you through each developmental phase, detailed growth charts, and expert tips to ensure your Frenchie matures strong and happy.
Growth Milestones by Age
Puppy Stage (0–3 Months)
- Birth to 1 Month: Newborn French Bulldogs typically weigh 4–7 oz (males) or 3–6 oz (females). Growth is rapid; they may double their birth weight in the first two weeks.
- 1 to 3 Months: By the end of month three, most Frenchie puppies weigh between 8–14 lbs (males) or 8–12 lbs (females). Their legs lengthen, but height remains under 6 inches at the withers.
Adolescent Stage (4–8 Months)
- 4 to 6 Months: French Bulldogs continue to gain weight quickly. Males average 12–22 lbs; females 10–20 lbs. Height climbs to 7–9 inches.
- 7 to 8 Months: Growth in height begins to slow. Puppies reach about 80–90% of their adult height by eight months but may still look lean.
Young Adult Stage (9–12 Months)
- 9 to 12 Months: During this time, most Frenchies hit their maximum height, between 10 and 13 inches. They also achieve close to full adult weight (~75–85% of final weight). When does a French Bulldog stop growing? In height, typically here. Muscle tone and body shape refine as they fill out.
Full Maturity (12–24 Months)
- 12 to 15 Months: While vertical growth is minimal, puppies continue “filling out” with muscle and bone density.
- 15 to 24 Months: Final weight gains and head development (the signature square skull and facial wrinkles) happen during the second year. By 24 months, most French Bulldogs are at 100% of their adult size and build.
Key Factors Influencing Growth
Genetics
Breeders aim for stocky, healthy heads and compact bodies. When does a French Bulldog stop growing? Largely predetermined by lineage: puppies from smaller parents finish growing slightly sooner but reach a smaller adult frame.
Nutrition
Proper nutrient balance—protein, healthy fats, vitamins, and minerals—is crucial. Overfeeding can lead to obesity; underfeeding can stunt development.
Exercise and Activity
Moderate play and short walks support muscle development without risking joint injury. Avoid high-impact exercise and jumping from heights during the first year.
Healthcare and Environment
Regular vet visits, parasite control, and a stress-free home contribute to steady, healthy growth. Chronic illnesses or neglect can impair development.
Weight and Height Charts
Male French Bulldog Weight Chart
| Age | Weight (lbs) |
| 1 Month | 4–7 |
| 2 Months | 9–12 |
| 3 Months | 10–14 |
| 4 Months | 12–16 |
| 5 Months | 15–20 |
| 6 Months | 17–22 |
| 7 Months | 18–25 |
| 8 Months | 19–27 |
| 9–12 Months | 20–28 |
| 1–2 Years | 20–30 (fill out) |
Female French Bulldog Weight Chart
| Age | Weight (lbs) |
| 1 Month | 3–6 |
| 2 Months | 7–10 |
| 3 Months | 8–12 |
| 4 Months | 10–15 |
| 5 Months | 11–17 |
| 6 Months | 13–20 |
| 7 Months | 14–21 |
| 8 Months | 15–22 |
| 9–12 Months | 16–24 |
| 1–2 Years | 17–25 (fill out) |
Height Chart for French Bulldogs
| Age | Height (inches) |
| 3 Months | 4–6 |
| 6 Months | 7–9 |
| 9 Months | 10–11 |
| 12 Months | 11–13 |
How to Support Healthy Growth?
Balanced Diet Guidelines
- Feed a high-quality puppy formula until 12 months, then transition to adult maintenance food.
- Divide daily calories into 3–4 meals for puppies under six months; 2–3 meals thereafter.
- Avoid table scraps and excessive treats; use low-calorie training rewards.
Safe Exercise Routines
- Short leash walks (5–10 minutes per month of age, twice daily).
- Gentle play sessions—tug-of-war, fetch with soft toys.
- Early socialization, but avoid crowded dog parks until vaccinations are complete.
Regular Veterinary Check-ups
- At least three puppy visits: 8, 12, and 16 weeks for vaccinations and growth monitoring.
- Biannual adult exams to track weight, body condition score, and joint health.
Monitoring Growth at Home
- Home Weigh-Ins: Use a pet scale or weigh yourself holding the puppy and subtract your weight.
- Body Condition Score (BCS): Feel ribs—should be palpable but not visible. Look for a visible waist behind the ribs.
- Photo Journal: Monthly side-profile photos help track physique changes.
Wrapping Up
Knowing when a French Bulldog stops growing helps you anticipate care needs and celebrate milestones. In height, expect growth to conclude around 9–12 months; weight and muscular fill-out continue until 18–24 months. With balanced nutrition, safe exercise, and attentive healthcare, your Frenchie will reach its full, healthy potential by two years of age.
Frequently Asked Questions (FAQs)
1. At what age is a French Bulldog fully grown?
Most French Bulldogs reach their maximum height between 9 and 12 months of age. They typically fill out in weight and muscle by 12–15 months, with final “fill-out” and head development completing by 18–24 months.
2. How can I tell if my Frenchie is still growing?
You can monitor growth by:
- Weigh regularly (using a pet scale or the “weigh yourself with/without puppy” method).
- Measuring height at the withers every few weeks.
- Photographing side profiles monthly for visual comparison.
- Checking body condition score—ribs should be palpable but not visible.
3. Does spaying or neutering affect my French Bulldog’s growth?
Spaying and neutering before puberty can slightly delay the closure of growth plates, sometimes leading to a marginally taller height. However, these differences are minimal, and overall adult size and health are unaffected when procedures are performed at the veterinarian’s recommended age.
4. What should I do if my Frenchie seems underweight or overweight?
- Underweight: Ensure you’re feeding a balanced, high-quality puppy or adult formula at the correct portions, and rule out parasites or health issues with your vet.
Overweight: Reduce calorie-dense treats, follow feeding guidelines, and incorporate safe, moderate exercise. Consult your veterinarian for a tailored weight-management plan.