Puppy feeding and growth
Why has my puppy's growth slowed down?
Last updated 23 September 2026 · How we write and check this
Short answer
Growth naturally slows as a puppy approaches its adult size, which for a small breed can happen as early as 9 months and for a giant breed not until nearer 2 years. A slowdown at the age typical for its breed and size is expected; one that happens much earlier is worth checking with a vet.
Slowing down is usually the plan working
Growth rate is never a straight line: it is fastest in the first few months and tapers off gradually as a puppy nears its genetically determined adult size. A puppy that gained rapidly early on and is now adding weight more slowly is typically just following a completely normal curve.
Comparing the timing to breed expectations
The key question is whether the slowdown matches when this breed and size category is expected to be finishing growth. A small breed slowing at eight or nine months is on schedule; a large breed slowing at the same age is finishing unusually early and worth a closer look.
When slowed growth is a concern
If growth stalls noticeably earlier than expected for the breed, especially alongside reduced energy, poor appetite, or a dull coat, it is worth a vet visit to rule out an underlying cause, since nutrition, parasites, and some health conditions can all affect a puppy's growth rate.
Key takeaways
- Growth rate naturally tapers as a puppy nears its adult size.
- Whether a slowdown is normal depends on how it compares to typical timing for the breed.
- Small breeds finish growing much earlier than giant breeds.
- An unusually early slowdown paired with low energy or poor appetite warrants a vet check.