Use this Leonberger puppy weight calculator to predict how big your puppy will get. Leonbergers are a giant working breed that keeps growing until around 18-24 months.
Enter your puppy's current weight and age to predict their adult size
Estimates based on breed growth curves. Individual dogs vary with genetics and nutrition — check with your vet for a personalized read.
Slows fast eaters, can aid digestion, holds 4 cups dry or wet food — sized for giant breeds.
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| Age | Weight |
|---|---|
| Birth | 2 to 6 lbs |
| 2 Months | 7 to 17 lbs |
| 3 Months | 14 to 34 lbs |
| 4 Months | 23 to 51 lbs |
| 5 Months | 31 to 68 lbs |
| 6 Months | 41 to 85 lbs |
| 7 Months | 50 to 102 lbs |
| 9 Months | 59 to 119 lbs |
| 10 Months | 68 to 136 lbs |
| 1 Year | 77 to 153 lbs |
| 1.5 Years | 86 to 170 lbs |
| 2 Years | 90 to 170 lbs |
Estimated from typical giant-breed growth curves and the Leonberger's adult weight range. Individual puppies vary — use the calculator above for a prediction based on your puppy's actual current weight.
New breed data, growth tips, and puppy-parenting insights, plus our free printable puppy growth tracker.
As a giant, deep-chested breed, Leonbergers carry meaningful bloat risk. They're also prone to hip and elbow dysplasia, and the breed has a documented predisposition to Leonberger polyneuropathy, an inherited nerve disorder affecting mobility. Cancer risk is elevated as in many giant breeds.
A large-breed puppy formula through the growth period; adults benefit from meals split to help reduce bloat risk.
The thick double coat needs regular brushing, more during seasonal shedding — a genuine commitment given the breed's size.
Gentle and eager to please, Leonbergers generally train well, though early socialization matters given their eventual giant size.
A German giant breed developed to resemble a lion, combining Saint Bernard, Newfoundland, and Great Pyrenees ancestry.
Gentle and family-oriented despite its imposing size, the Leonberger is known for a calm, friendly temperament.
