🐾 The Puppy Predictor

How big will your puppy really get? We skip the old "double their four-month weight" guess and use the real, size-adjusted growth curve — because a Dachshund and a Great Dane grow up on completely different timelines. Enter a few things and get a grown-up size range, a growth chart, and a printable keepsake.

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1 mo24 mo
months
+ weeks

No scale? Hold your puppy and step on the bathroom scale, then weigh yourself alone and subtract — close enough.

Why not just "double the four-month weight"?

Because puppies don't all grow on the same clock. A small breed is nearly grown by its first birthday, while a giant breed is still filling out its frame at two years old. The fraction of their final weight a pup has reached at any given age depends on size:

~12 moSmall
(grown by a year)
~14 moMedium
(a bit past a year)
~18 moLarge
(year and a half)
~24 moGiant
(up to two years)

These are friendly estimates from breed-club and veterinary growth guidance. Every puppy is its own wonderful surprise — and your vet, who can see and feel how your pup is built, always knows best.

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This is a fun estimate, not a guarantee. Your puppy's real adult size can vary. Ask your veterinarian for guidance.