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Cavalier King Charles Spaniel Growth Chart
Cavalier King Charles Spaniel puppies usually approach their 13–18 lb adult range near 12 months. Male and female ranges often overlap, so the weight-by-age chart in lb and kg is most useful as a trend across consistent weekly measurements.
View weight chart (lb & kg)Calculate Your Cavalier King Charles Spaniel Puppy's Adult Weight
Enter your Cavalier King Charles Spaniel puppy's age and current weight for an estimated adult weight range.
Cavalier King Charles Spaniel weight by age
Typical male and female puppy weight ranges by age, available in lb and kg. Individual puppies may vary.
Most Cavalier King Charles Spaniel puppies approach adult weight around 11 months, although individuals may finish earlier or later.
These estimated ranges combine the breed's adult weights with a size-based growth curve. They are not measured breed-specific percentiles or health targets. Month labels are rounded approximations; use the week values for each row. How these weight ranges are calculated
Cavalier King Charles Spaniel Growth Stages
Understanding the typical growth stages helps you know what to expect as your Cavalier King Charles Spaniel puppy grows.
Neonatal
0–2 weeksPuppies are born with eyes and ears closed, relying entirely on their mother. Rapid weight gain occurs during this period.
Socialization
3–12 weeksEyes and ears open. Puppies begin to explore, play, and learn social behaviors. This is a critical period for development.
Juvenile
3–6 monthsRapid growth continues. Puppies become more independent, start teething, and develop coordination.
Adolescent
6–10 monthsGrowth rate begins to slow. Puppies reach sexual maturity and may test boundaries. Muscle mass develops.
Young Adult
10–12 monthsGrowth is nearly complete. Your puppy is filling out and approaching adult proportions.
Adult
12+ monthsYour puppy has reached their full adult size. Weight should remain relatively stable with proper nutrition.
Cavalier King Charles Spaniel FAQ
How much will my Cavalier King Charles Spaniel puppy weigh as an adult?
As a small breed, Cavalier King Charles Spaniels usually reach an estimated adult range of 13–18 lb overall. Sex matters: males typically finish around 13–18 lb and females around 13–18 lb. Track weekly weigh-ins to see whether your puppy trends toward the lower or upper end.
At what age is a Cavalier King Charles Spaniel fully grown?
Cavalier King Charles Spaniels are small dogs that typically reach most of their adult weight between 9 and 12 months. Cavaliers typically finish near 12 months with gradual coat and bone fill. Slight muscle or coat fill may continue briefly after height stabilizes, so weekly weigh-ins give a clearer picture than a single reading.
How accurate is a Cavalier King Charles Spaniel puppy weight chart?
Chart accuracy for Cavalier King Charles Spaniels depends on individual build. Differences in similar male and female ranges can shift results, since silky feathering can exaggerate apparent bulk. Weekly weigh-ins on the same scale and time of day typically improve estimate quality over time.
How much should a Cavalier King Charles Spaniel puppy weigh at 12 weeks?
Check the 12-week row in the weight-by-age table above for the estimated male and female ranges. If your puppy falls well outside that band, re-check the scale, the lb/kg setting, and the age entry first — a single off reading is more common than a truly unusual puppy.
Do male and female Cavalier King Charles Spaniels grow differently?
The difference is small — both sexes typically finish between 13 and 18 lb, with males at the upper end. Their growth curves overlap closely at every age.
Is my Cavalier King Charles Spaniel puppy underweight or overweight?
The silky feathering can make Cavaliers look heavier than they are, so feel the ribs rather than trusting your eyes. Cavaliers are prone to weight gain, which strains the heart — keep them lean and ask your vet to check body condition.
How much should I feed my Cavalier King Charles Spaniel puppy?
Feed measured meals of a quality puppy food — Cavaliers are enthusiastic eaters and gain weight easily. Given the breed's heart risks, keeping weight in check matters. Ask your vet about portions.