Pet weight tracker
Keeping your dog or cat at a healthy weight is one of the kindest things you can do for them. Log their weight here and watch the trend — it’s free, private to your browser, and you can print it or save a PDF for your vet.
Quick body condition check
The scales only tell half the story — your pet’s body condition (how they look and feel) matters just as much. A 30-second hands-on check, based on PDSA and WSAVA guidance:
Ribs
You should be able to feel the ribs easily with a light touch, without a thick layer of fat over them.
Waist
Looking down from above, there should be a visible waist behind the ribs — not a straight or bulging outline.
Tummy tuck
From the side, the tummy should tuck up towards the back legs rather than hang level or sag.
Tail base
There shouldn’t be a noticeable build-up of fat around the base of the tail.
If you can’t feel the ribs, can’t see a waist, or there’s a sagging tummy, your pet may be carrying extra weight — worth a chat with your vet. The same check the other way (ribs and spine very prominent, no fat cover) can mean underweight.
A tracking tool, not a diagnosis
Sudden weight loss or gain can be a sign of illness. Use this to spot trends, but always discuss significant changes — and any weight-loss plan — with your own vet.
Common questions
How often should I weigh my dog or cat?
For a healthy adult pet, monthly is plenty to spot a trend. If your vet has asked you to manage weight loss or gain, weigh more often — every week or two — and bring the chart to check-ups. Puppies and kittens grow fast, so weigh them more frequently.
Is weight alone enough to know if my pet is healthy?
No — weight is most useful alongside a body condition score, which is how your pet actually looks and feels. Two dogs of the same weight can be very different shapes. Use the quick body-condition check below, and ask your vet to confirm.
How do I weigh a cat or small dog at home?
Weigh yourself on bathroom scales, then weigh yourself holding your pet, and subtract the difference. For accuracy, most vet practices have walk-on scales in reception you’re welcome to use — many are happy for you to pop in.
My pet’s weight is creeping up — what should I do?
Small, steady changes are normal, but a clear upward trend is worth acting on early. Check portion sizes (including treats), keep up daily exercise, and speak to your vet before making big diet changes, especially for pets with health conditions.
Is my data saved anywhere?
Your entries are stored only in your own browser, on your device — nothing is sent to us or stored on our servers. Printing or saving as PDF gives you a copy to keep or share with your vet.
Sources
Body condition guidance reflects PDSA’s Weigh Up campaign and WSAVA nutrition guidelines. Always confirm your pet’s healthy weight with your own vet.