Puppy feeding and growth
What are growth spurts in puppies and when do they happen?
Last updated 23 September 2026 · How we write and check this
Short answer
Growth spurts are short windows where a puppy gains weight and sometimes height faster than usual, often noticeable between 3 and 6 months for most breeds. Appetite typically rises noticeably during these windows, then settles back to a steadier pace afterward.
What is actually happening physically
Growth is not perfectly linear; bone lengthening and weight gain speed up and slow down in waves rather than a smooth steady climb. A puppy can look leaner during a fast growth spurt, since height gain sometimes outpaces the muscle and fat filling in around it, then look more filled out again once things settle.
When they tend to cluster
The most noticeable growth spurts usually happen somewhere between three and six months for medium and large breeds, though small breeds often have theirs earlier, and giant breeds can have a second wave later, sometimes closer to nine to twelve months, given how much longer their overall growth period runs.
Feeding through a growth spurt
A puppy noticeably hungrier than usual for several consecutive days, without other symptoms, is often mid spurt rather than being overfed. Increasing portions in small steps and reweighing after a week helps confirm the extra food is matching real growth rather than just extra calories.
Key takeaways
- Growth spurts are periods of faster than usual growth rather than a steady climb.
- Most breeds show noticeable spurts somewhere between 3 and 6 months.
- A puppy can look temporarily leaner during a spurt as height outpaces muscle fill.
- Increased hunger during a spurt is normal and can be matched with gradually larger portions.