How big do Lagotto Romagnolos get? The tool below projects your own puppy’s adult weight from its current age and weight, plotted against the typical Lagotto Romagnolo 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 Lagotto Romagnolo is a medium-sized breed. Adult males typically weigh 28–35 lb (12.7–15.9 kg) and females 24–31 lb (10.9–14.1 kg). Most Lagotto Romagnolos 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 Lagotto Romagnolos stop growing?
Most Lagotto Romagnolos 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 Lagotto Romagnolo puppy weigh at 4 months?
A typical 4-month-old Lagotto Romagnolo weighs roughly 12–15 lb, about 46% of its adult weight. Use the calculator above with your puppy’s exact weight for a personalized estimate — individual dogs vary.