Puppy feeding and growth
Why is my large breed puppy growing so fast?
Last updated 23 September 2026 · How we write and check this
Short answer
Large breeds are genetically built to reach a much bigger adult size, and to get there in roughly the same one to two year window as smaller dogs, they gain weight far more quickly during puppyhood. It is normal, not a sign of overfeeding, as long as weight gain matches breed expectations.
Bigger dogs, similar timeline
A giant breed puppy has to gain many times more total weight than a toy breed puppy but has only a somewhat longer window to do it in, which means the rate of gain per week is naturally much higher. Seeing a large breed puppy add noticeably more weight week to week than a friend's small breed puppy is expected, not unusual.
Fast is not the same as too fast
There is a difference between a large breed puppy growing quickly because that is normal for its genetics, and one growing faster than even its own breed's typical curve because of overfeeding. Comparing weight gain against large breed specific growth references, rather than against smaller breeds, is the more useful check.
Supporting fast growth safely
A large breed puppy formula, correctly portioned and reassessed every couple of weeks, is built to support this faster gain at a pace the skeleton can handle. Avoiding extra calcium supplements and not overfeeding beyond the chart, even though the dog seems to want more, helps keep growth on a safe trajectory.
Key takeaways
- Large breeds gain weight faster than small breeds because they have much more growing to do.
- Fast growth for a large breed is expected and not automatically a sign of overfeeding.
- Compare growth against large breed specific references rather than smaller breeds.
- A properly portioned large breed puppy formula supports fast growth at a safer pace.