How big do Boykin Spaniels get? The tool below projects your own puppy’s adult weight from its current age and weight, plotted against the typical Boykin Spaniel growth curve.
Estimates combine your puppy’s current trajectory with typical growth curves for this breed and size class. Individual dogs vary — nutrition, genetics and neuter timing all matter. For health concerns, ask your vet.
The Boykin Spaniel is a medium-sized breed. Adult males typically weigh 30–40 lb (13.6–18.1 kg) and females 25–35 lb (11.3–15.9 kg). Most Boykin Spaniels reach about half their adult weight around 4.3 months, hit 90% by roughly 9.1 months, and are fully grown near 13 months. A useful rule of thumb for medium breeds: they roughly double their four-month weight.
When do Boykin Spaniels stop growing?
Most Boykin Spaniels reach their full adult height and weight by about 13 months. Growth is fastest before 4.3 months, then slows steadily — by 9.1 months your puppy will be about 90% of its final size.
How much should a Boykin Spaniel puppy weigh at 4 months?
A typical 4-month-old Boykin Spaniel weighs roughly 13–17 lb, about 46% of its adult weight. Use the calculator above with your puppy’s exact weight for a personalized estimate — individual dogs vary.