Puppy feeding and growth
Does spaying change how much I should feed my puppy?
Last updated 23 September 2026 · How we write and check this
Short answer
Yes, spaying tends to lower metabolic rate somewhat, similar to the effect seen in neutered males, often meaning calorie needs drop by roughly 10 percent afterward. Reweigh a few weeks post surgery and reduce the daily food amount if weight starts rising faster than expected for the puppy's growth stage.
A similar hormonal effect to neutering
Removing the ovaries changes hormone levels in ways linked to a modestly reduced resting metabolic rate in many female dogs, which means the pre surgery feeding amount can start to be slightly too much if left unadjusted over the following weeks and months.
When to make the adjustment
There is no need to reduce food immediately after surgery, since recovery itself does not require extra calories. Instead, watch weight and body condition over the following month and reduce the daily amount by around 10 percent if a clear upward trend appears.
Balancing this against ongoing growth
For a puppy spayed before finishing growth, the aim is a gentle reduction that accounts for the metabolic shift without cutting into the calories still needed for development, so small, weight trend based adjustments work better than an immediate large cut in portions.
Key takeaways
- Spaying tends to lower metabolic rate, often reducing calorie needs by around 10 percent.
- No immediate food reduction is needed right after the surgery itself.
- Monitor weight over the following month and adjust gradually if it trends upward.
- Keep the adjustment gentle for a puppy still growing to avoid underfeeding its development.