Puppy Growth Chart
how big will she get?

Enter your puppy's age and current weight and the tool projects an adult weight from where she sits on the growth curve. A puppy carries a predictable share of her adult weight at each age: roughly a quarter of it at 8 weeks for a small breed, closer to 15 percent for a giant breed, because bigger dogs grow for longer. Divide the current weight by that share and you have an estimate. It is an estimate, not a measurement, and the tool shows a range rather than a single number for that reason.

It depends on adult size. Toy and small breeds are usually at their adult weight by 10 to 12 months. Medium breeds finish around 12 months. Large breeds keep filling out to about 18 months, and giant breeds can take 18 to 24 months to finish, which is why the chart runs to 18 months rather than stopping at a year. Height finishes before weight in most dogs: a large-breed puppy often reaches full height by a year and then adds substance for another six months.

There is no single answer, because it depends entirely on adult size. At 8 weeks a toy breed is typically 1 to 3 lbs, a small breed 3 to 6, a medium 6 to 12, a large 10 to 20, and a giant 14 to 28. By 12 weeks most puppies have roughly doubled, and by 16 weeks they are around half their adult weight (a little more for small breeds, a little less for giants). Pick your size category and the chart lays out every milestone with the calendar date attached.

Enter a current weight and the tool compares it against the expected range for that age and size, and tells you whether she is in range or drifting. Treat that as a prompt, not a diagnosis. Weight alone does not tell you body condition: a vet assessing ribs, waist, and muscle tone is measuring something this tool cannot see. Persistent drift in one direction is the signal worth acting on, not a single reading.

The curve shape is the same, but the destination is harder to pin down, because a mix can inherit either parent's adult size or land somewhere between. If you do not know the adult size category, enter the weight and age anyway: the tool will tell you which categories your puppy is currently tracking, which is usually a span rather than one answer. Expect a wider range than you would get for a purebred, and re-check every few weeks as the picture firms up.

The ranges derive from Royal Canin's published puppy growth-curve model (the 'percent of adult weight at each milestone age' table for Small, Medium, Large, and Giant size classes) applied to standard AKC adult-weight buckets. They're a starting point, not a breed-specific lookup. Individual breeds vary 10 to 20 percent within a size class. Use the tool to spot major curve drift early; for tighter precision, look up your specific breed's growth standard or talk to your vet.

By adult weight: Toy is under 12 lbs (Chihuahua, Yorkie, Pomeranian). Small is 12 to 25 lbs (Beagle, Cocker Spaniel, Mini Schnauzer). Medium is 25 to 55 lbs (Border Collie, Bulldog, Australian Shepherd). Large is 55 to 100 lbs (Labrador, German Shepherd, Boxer). Giant is over 100 lbs (Great Dane, Mastiff, Saint Bernard).

They mean: is the puppy gaining weight at the rate expected for the breed and size, on the curve, not above or below it. Healthy growth is steady week-over-week gain that lands inside the expected range. Major drift (off the bottom or top of the range for the age) is worth a conversation; small fluctuations are normal.

Small deviations (within 10 to 15 percent of the range) are usually fine and reflect individual variation or recent meal timing. Bigger gaps may signal under- or over-feeding, parasites, or a breed that's just on the smaller or larger end of its category. Always bring it up at the next vet visit, especially if the drift is accelerating week-over-week.

Steady weight loss, plateaued growth for more than 2 weeks, or visible ribs/hip bones in a young puppy all warrant a same-week vet call. For the opposite end, overweight puppies are a long-term joint and longevity risk, especially in large and giant breeds where excess weight during growth correlates with hip dysplasia.

Normal. Most puppies have a major growth phase between weeks 8 and 16 (the doubling-in-size window), then slow gain until they hit their adult weight (~12 months for small/medium, ~18-24 months for large/giant). Plateaus of 1 to 2 weeks within an otherwise rising curve are normal and not a cause for concern.