I weighed a three-day-old Frenchie at 2 a.m. last Tuesday. She'd dropped two ounces since birth and her littermates were pushing her off the best teats. I tube-fed her every two hours for four days straight. By week two, she was the chunkiest pup in the litter.
That's the thing about Frenchie puppies. The first twelve months are full of dramatic swings. One week they're helpless potatoes. The next they're climbing out of the whelping box. Parents panic about things that are completely normal and miss things that actually matter.
I've raised over 200 Frenchie puppies. I know which milestones matter, which ones don't, and what to watch for at every stage. This guide walks you through birth to twelve months, week by week, with the real stuff no one tells you until something goes wrong.
Weeks 0-2: The Neonatal Stage
Frenchie puppies are born blind, deaf, and completely helpless. Birth weight runs 5-9 ounces depending on litter size. Singles and twins come out bigger. Litters of four or more produce smaller pups.
They can't regulate body temperature. They can't pee or poop without stimulation. All they do is eat, sleep, and crawl toward heat. A healthy newborn gains 5-10% of body weight daily.
What Happens Week One
- Umbilical cord dries and falls off by day 3-5
- Puppies sleep 90% of the time, nurse every 2-3 hours
- Eyes and ears sealed shut
- No teeth
- Can't stand or walk, only paddle crawl
- Mom stimulates elimination by licking
Breeders weigh puppies twice daily. Any pup that loses weight two days in a row gets supplemented. I use puppy formula and a 5ml syringe. Tube feeding is faster but requires training.
What Happens Week Two
- Birth weight doubles by day 10-14
- Eyes start cracking open around day 10-13
- Ear canals still closed
- First baby teeth may poke through (rare this early)
- Start attempting to stand, usually fall over
- More alert during brief wake periods
This is when color really shows. Blues and lilacs look gray. Chocolates darken. What looks black may turn blue or seal. DNA testing before breeding confirms color genetics, but visual ID takes weeks.
Weeks 3-4: Eyes Open, World Begins
Eyes fully open by day 14-18. Ear canals open a few days later. Suddenly they can see and hear. The world is overwhelming and fascinating.
They start standing without tipping over. By week four, they're walking. Clumsy, drunk-looking walks, but walks. They investigate everything with their mouths.
Development Markers
- All baby teeth coming in by end of week 4
- Start lapping water from a dish
- Begin showing interest in mom's food
- Play with littermates (mostly mouthing and pouncing)
- Can eliminate without stimulation
- Startle response to loud noises develops
- Recognize familiar people
Weight at four weeks: 2-3.5 pounds for most Frenchies. Runts may be 1.5 pounds. Giants hit 4 pounds. Both extremes can be healthy if gaining steadily.
Breeders start weaning around day 21-25. I mix puppy formula with high-quality puppy kibble until it's oatmeal consistency. Puppies make a hilarious mess learning to eat. By week 5, they're eating soft food reliably.
Weeks 5-8: Critical Socialization Window
This is the single most important month of your Frenchie's life. What they experience between 5-8 weeks shapes their temperament forever. Miss this window and you'll fight fear and reactivity for years.
Puppies are confident explorers now but not yet fearful. They bounce back from new experiences fast. Good breeders expose them to everything: vacuum cleaners, doorbells, children, other dogs, car rides, crate time, nail trims, being handled by strangers.
Physical Milestones
- Weight at 8 weeks: 5-10 pounds (average 7-8 pounds)
- Fully weaned from mom
- All 28 baby teeth in
- Ears may start standing up (or may stay floppy until 12+ weeks)
- Clumsiness fades, coordination improves
- Sleep drops to 16-18 hours daily
Ears are a common question. Some Frenchie ears stand at 6 weeks. Others take 4-5 months. Teething can make ears flop down temporarily. If ears aren't up by 7-8 months, they likely won't stand without taping.
Behavioral Milestones
- Fear period begins around week 8 (lasts 1-2 weeks)
- Bite inhibition learned through play with littermates
- Start recognizing their name
- Can start simple potty training
- Show distinct personalities
- Test boundaries with people and other puppies
The 8-week fear period is why good breeders don't send puppies home before 9-10 weeks. A scary car ride or vet visit during this window can cause lasting trauma. Wait until the fear period passes.
Weeks 9-12: Going Home and Settling In
Most Frenchie puppies go home between 9-12 weeks. The first 72 hours are chaos. Puppies cry at night. They pee inside. They bite everything. This is normal.
Your puppy just lost their mom, siblings, and everything familiar. Give them a week to adjust before you panic about their personality or behavior.
Physical Development
- Weight at 12 weeks: 9-15 pounds
- Growth is rapid, about 1-2 pounds per week
- Baby teeth still in, adult teeth start pushing up underneath
- Bladder control improving but still limited to 2-3 hours
- Can handle 15-20 minute walks
- Sleep 14-16 hours daily
Feed three meals daily until 6 months. Frenchies have small stomachs and sensitive digestion. Puppies who eat too much at once vomit or get diarrhea.
Training and Behavior
Start crate training, potty training, and basic commands immediately. Frenchies are smart but stubborn. They respond to positive reinforcement and food rewards. Punishment doesn't work. It just makes them avoid you.
- Potty every 2 hours plus after eating, sleeping, playing
- Nipping and biting is normal teething behavior
- Redirect to chew toys, don't yell or hit
- Short 5-minute training sessions, multiple times daily
- Enforce naps in crate, overtired puppies are nightmares
Expect 1-2 accidents daily for the first month. Some puppies train in 2 weeks. Others take 6 months. Males are slower than females. It's not a reflection of intelligence.
Months 4-6: The Teenage Phase
Teething hell begins at 4 months and lasts until 7-8 months. Adult teeth push out baby teeth. Gums are sore. Your puppy will chew everything. Shoes, furniture, baseboards, your hands.
This is also when the perfect puppy you brought home turns into a stubborn teenager. They "forget" commands they knew. They test every boundary. They act like you've never met.
Physical Changes
- Weight at 6 months: 15-22 pounds (females smaller than males)
- Adult teeth replacing baby teeth
- Females may have first heat cycle (as early as 5 months, average 6-9 months)
- Males start marking and humping behaviors
- Energy levels peak, need more exercise
- Growth slows but continues
Feed two meals daily now. Total daily food: 1.5-2 cups of high-quality puppy kibble, split between meals. Adjust based on body condition. You should feel ribs easily but not see them.
Behavior Challenges
This is the age most Frenchies end up in rescues. Families aren't prepared for adolescent behavior. They think something is wrong with their puppy. Nothing is wrong. Your Frenchie is just being a teenager.
- Selective hearing develops
- May regress in potty training
- Fear period #2 around 6 months (shyer, more cautious)
- Leash pulling intensifies
- Barking increases
- Separation anxiety may surface
Stay consistent. Don't let behaviors slide because they're "still learning." Behaviors you allow now become permanent habits. If you don't want a 25-pound adult jumping on guests, don't allow it in a 15-pound puppy.
Months 7-12: Near-Adult Growth
Teething ends around 7-8 months. The crazy chewing slows down. Your puppy starts resembling the adult dog they'll become. Their personality solidifies.
Growth continues but slows significantly. Most Frenchies reach 90% of adult weight by 9 months. They fill out in chest and muscle between 9-12 months.
Physical Development
- Adult weight: females 16-24 pounds, males 20-28 pounds
- All adult teeth in by 8 months
- Females cycle every 6-8 months
- Males fully capable of breeding (don't let this happen)
- Energy levels stay high but become more manageable
- Sleep 12-14 hours daily
Switch to adult food around 12 months. Frenchies don't need puppy food past one year. High-quality adult kibble with moderate protein (22-26%) and moderate fat (12-16%) works well. Watch portion sizes. Frenchies get fat easily.
Behavior Maturity
The chaos settles down. Frenchies aren't truly mature until 18-24 months, but by one year, they're calmer. Potty training should be solid. Basic commands should be reliable.
- Can hold bladder 6-8 hours (though they shouldn't regularly)
- Leash manners improve with consistent training
- Stranger reactivity may increase (normal guarding behavior)
- Play style with other dogs changes (less puppy, more adult)
- Nap time without crate enforcement
Some Frenchies stay puppyish until two years old. Others mature faster. Males tend to stay goofy longer. Females settle down sooner.
Essential Health Checks Timeline
Frenchies need more vet care than most breeds, especially in the first year. Don't skip appointments to save money. Problems caught early are cheaper and easier to fix than problems ignored.
Vaccination Schedule
- 6-8 weeks: First DHPP (distemper, parvo, parainfluenza, hepatitis)
- 10-12 weeks: Second DHPP
- 14-16 weeks: Third DHPP plus rabies
- 16-20 weeks: Final DHPP booster
- 12 months: DHPP and rabies boosters, then every 1-3 years per state law
Some vets push bordetella, leptospirosis, and canine flu vaccines. These aren't core vaccines. Discuss your lifestyle and risk factors. Dogs who never board or visit dog parks don't need them.
Deworming and Parasite Prevention
Puppies get dewormed at 2, 4, 6, and 8 weeks at the breeder. You continue monthly heartworm and flea/tick prevention year-round. Don't skip winter months. Parasites don't care about snow.
Health Screenings
Reputable breeders screen parents for genetic issues before breeding. Your puppy should come with proof of parent health testing. At minimum: hips (OFA or PennHIP), patellas (OFA), spine (OFA), cardiac, and eyes.
You can't screen a puppy for hip dysplasia until growth plates close at 18-24 months. But watch for early signs: bunny hopping, trouble jumping, reluctance to run, sitting to the side instead of square.
Soft palate issues, stenotic nares (pinched nostrils), and elongated soft palates are the big three BOAS problems. Some Frenchies need surgery. Others manage with weight control and limited exercise in heat.
For more on managing Frenchie-specific health issues, see our complete health center guide.
First-Year Cost Reality
Frenchies are expensive. If you can't budget $5,000-$8,000 for the first year, don't get one. That's beyond the puppy purchase price.
Initial Costs (First Month)
- Crate: $60-120
- Playpen: $50-100
- Bowls, collar, leash, ID tag: $40-80
- Bed and blankets: $50-100
- Toys and chews: $50-100
- Puppy food (4-week supply): $40-80
- First vet visit: $150-300
- Puppy training class: $100-250
Total first month: $540-1,130.
Ongoing Monthly Costs
- Food: $60-100
- Flea/tick and heartworm prevention: $30-60
- Pet insurance: $50-100 (highly recommended for Frenchies)
- Grooming supplies or professional grooming: $30-80
- Treats and replacement toys: $20-40
Total monthly: $190-380. Annual: $2,280-4,560.
Medical Costs (First Year)
- Vaccines (series of 3-4): $300-500
- Spay/neuter at 12-18 months: $500-1,200
- Emergency vet visit (Frenchies are prone): $500-2,000
- Routine vet visits: $200-400
Total first-year medical: $1,500-4,100.
That doesn't include BOAS surgery if needed ($3,000-8,000), cherry eye correction ($500-1,500 per eye), or other breed-specific issues. Pet insurance pays for itself with one emergency.
Red Flags at Every Stage
Most puppy problems are normal growing pains. But some signs mean you need a vet today, not next week.
Birth to 8 Weeks (Breeder Responsibility)
- Weight loss for 2+ consecutive days
- Crying constantly, not nursing
- Lethargy, won't wake to eat
- Diarrhea lasting more than 24 hours
- Vomiting in puppies under 6 weeks (emergency)
- Cleft palate (milk coming out nose when nursing)
- Fading puppy syndrome (sudden decline, common in first 2 weeks)
Breeders should have relationships with vets who see litters within 24-48 hours of birth. Puppies decline fast. Hours matter.
9 Weeks to 6 Months (Your Responsibility)
- Vomiting or diarrhea lasting more than 24 hours (parvo risk until fully vaccinated)
- Bloated stomach with lethargy (potential intestinal blockage or parasites)
- Difficulty breathing, blue gums, fainting (BOAS emergency)
- Limping that doesn't resolve in 24 hours (injury or growth plate issue)
- Not eating for 24+ hours
- Sudden behavior change: hiding, aggression, excessive crying
- Eye discharge, redness, squinting (cherry eye, ulcer, infection)
6-12 Months
- Exercise intolerance that worsens (BOAS, heart issue)
- Persistent cough (kennel cough or worse)
- Weight loss despite normal eating
- Repeated vomiting or diarrhea (food allergy, IBD, infection)
- Swollen, painful joints (panosteitis, early arthritis)
- Cherry eye (red mass in corner of eye, needs surgical tacking)
Trust your gut. You know your puppy. If something feels wrong, call the vet. Better to be told it's nothing than to wait too long.
“Frenchie puppies should breathe loudly and snore”
Light snoring is normal. Loud, constant wheezing, gagging, or struggling to breathe is not. Severe BOAS doesn't improve with age. It gets worse. Early surgical intervention has better outcomes than waiting until the dog can't breathe.
Common questions, answered honestly
When do French Bulldog puppies stop growing?
Most Frenchies reach 90% of adult size by 9-10 months and full size by 12-14 months. Males may fill out in chest and muscle until 18 months. Weight gain past 12 months is usually fat, not growth.
How much should a French Bulldog puppy weigh at 3 months?
Average 12-week weight is 9-15 pounds, with females at the lower end and males at the higher end. Runts may be 7-8 pounds. Large males may hit 16-17 pounds. As long as your puppy gains steadily and the vet confirms healthy body condition, don't obsess over exact numbers.
When do French Bulldog ears stand up?
Anywhere from 6 weeks to 6 months. Most stand by 3-4 months. Teething can make ears flop temporarily. If ears aren't up by 7-8 months, they likely won't stand without taping. Floppy ears don't affect health, just aesthetics.
How long can a 12-week-old French Bulldog hold their bladder?
Three hours max, and that's pushing it. Puppies need to potty every 2 hours during the day, plus immediately after eating, sleeping, and playing. Overnight, they can usually hold it 4-5 hours by 12 weeks. Accidents are normal until 6 months.
What's the best food for French Bulldog puppies?
High-quality puppy food with moderate protein (26-30%) and moderate fat (14-18%). Avoid grain-free due to heart disease links. Brands I trust: Royal Canin Bulldog Puppy, Hill's Science Diet Puppy, Purina Pro Plan Puppy. Feed three times daily until 6 months, then twice daily.
When can French Bulldog puppies go outside?
Your yard is safe after the first round of shots at 8-9 weeks, as long as unvaccinated dogs haven't been there. Public spaces (parks, sidewalks, pet stores) wait until the vaccine series finishes at 16-17 weeks. You can carry your puppy outside to socialize before then.
Why is my Frenchie puppy so aggressive?
They're not aggressive. They're teething and playing. Puppies explore with their mouths. Biting, growling during play, and nipping are normal until 6 months. Redirect to toys, enforce naps when overtired, and don't yell or hit. True aggression in puppies under 6 months is extremely rare.
How much exercise does a French Bulldog puppy need?
Five minutes per month of age, twice daily. A 3-month-old gets two 15-minute walks or play sessions. Frenchies overheat easily and their joints are fragile during growth. No jogging, no long hikes, no jumping off furniture until at least 12 months.
When should I start training my Frenchie puppy?
Day one. Start basic commands (sit, come, look at me) and crate training as soon as your puppy comes home. Short 5-minute sessions multiple times daily. Enroll in puppy socialization classes by 10-12 weeks. Frenchies are smart and stubborn. Consistent training from the start prevents behavior problems.
Should I get pet insurance for my Frenchie puppy?
Yes. Frenchies are expensive to own. One BOAS surgery costs more than years of insurance premiums. Enroll before your first vet visit to avoid pre-existing condition exclusions. Expect $50-100 monthly. It's worth every penny when your Frenchie needs emergency care or surgery.