How much to feed
What should I do if two different vets gave my dog different target weights?
Last updated 23 September 2026 · How we write and check this
Short answer
A difference of a kilogram or so between two vets' estimates is normal, since target weight is an informed estimate based on frame size and body condition rather than an exact measurement, and reasonable professionals can judge it slightly differently. Use the more recent assessment, or ask both to explain their reasoning, and focus on body condition score as the more reliable ongoing guide either way.
Why estimates can reasonably differ
Target weight is judged by feel and eye, assessing frame size and current body condition, which involves some subjective judgment even among experienced professionals, so a modest difference between two assessments is not unusual or a sign either vet is wrong.
A larger difference, however, is worth asking about directly, since it may reflect a difference in how each vet assessed your dog's frame or simply a difference in when the assessment happened relative to your dog's current condition.
Deciding which figure to work from
If one assessment is significantly more recent, or came with a more detailed hands on explanation of frame size and body condition score, that is often the more useful figure to work from practically.
If you have an ongoing relationship with one particular vet who knows your dog's history well, their assessment carries useful context that a single visit elsewhere may not have.
Using body condition as the practical guide
Regardless of which specific kilogram number you use as a working target, body condition score, checking ribs, waist, and belly tuck, remains a reliable way to judge progress that does not depend on resolving a small disagreement between two exact numbers.
Aim for a body condition score of 4 to 5 out of 9 as the practical goal, and treat either vet's kilogram estimate as a rough guide toward that same underlying target rather than a precise figure to hit exactly.
Key takeaways
- A modest difference between two vets' target weight estimates is normal, since it involves some subjective judgment.
- Ask either vet to explain their reasoning if the difference seems larger than expected.
- Favor the more recent assessment, or one from a vet with an ongoing relationship with your dog.
- Use body condition score as the practical, reliable guide regardless of which exact kilogram figure you work from.