When Do Dogs Stop Growing? Full Growth Timeline by Breed Size
Reviewed by PetCalculatorHub Veterinary Advisory Team • Updated October 2026
Predict Your Puppy's Adult Weight & Size
Calculate your puppy's adult weight range and growth plate closure timeline.
Growth Stop Timeline by Breed Category
| Breed Category | Adult Weight Range | Skeletal Growth Stops | Full Muscle Maturity |
|---|---|---|---|
| Toy Breeds | Under 12 lbs | 7 to 9 Months | 9 to 11 Months |
| Small Breeds | 12 to 25 lbs | 9 to 11 Months | 11 to 13 Months |
| Medium Breeds | 25 to 50 lbs | 11 to 13 Months | 14 to 16 Months |
| Large Breeds | 50 to 85 lbs | 13 to 16 Months | 16 to 20 Months |
| Giant Breeds | 85+ lbs | 18 to 22 Months | 22 to 26 Months |
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