Log readings in seconds. Spot slow changes before they become problems. Private, free, and always in your browser.
Start LoggingFor puppies under one year, weekly weigh-ins help you confirm growth is on track. Senior pets and those on a diet plan also do well with weekly checks. Healthy adult dogs and cats can be weighed once a month. The important part is doing it on the same day, at the same time.
Morning, before breakfast, gives the most consistent number. A full stomach can add half a pound or more. If you weigh after dinner one day and before breakfast the next, the swing looks like a big change when it is just food and water.
Write down food changes, new treats, illness, or activity shifts. When the trend line moves, the notes help you figure out why. A dog who started a new medication and lost three pounds in a month is a different story than one who just got more walks.
Click the Print Vet Summary button before your appointment. It creates a clean one-page report with the pet's name, all logged weights, notes, and the trend chart. Your vet can glance at it and see the full picture instead of relying on memory.
For dogs under 50 pounds, a change of more than 5% of body weight in a month is worth a vet call. For cats, even a loss of half a pound in a month can signal a thyroid or kidney issue. Puppy weight should steadily climb. A flat or dropping line in a growing puppy needs attention right away.
Max weighed 12 lb at 8 weeks. His owner logs weekly. By 6 months he is at 45 lb. The trend line climbs steadily, confirming healthy growth. At 9 months the line flattens. The owner checks with the vet and learns Max hit his adult weight early. No problem, just useful information.
Whiskers has held at 11 lb for years. Over four months, the log shows a slow drop to 9.2 lb. The notes say appetite is normal but energy is lower. The owner prints the vet summary. Bloodwork reveals an early thyroid issue. Catching it at 9.2 lb instead of 8 lb made treatment easier.
Daisy weighs 34 lb. Her ideal weight is 24. The vet puts her on a diet. Weekly logs show a slow, steady drop. After four months she is at 27 lb. The notes track the new food portions. The owner shares the chart with the vet, who adjusts the plan. Daisy reaches 25 lb by month six.