A structured weight-loss programme succeeds or stalls on evidence. Fat loss in a dog is slow and uneven, so a trail that only shows occasional weights cannot tell your vet whether the plan needs adjusting or simply needs more time. The paperwork you keep at home — the food record, the weigh-ins, the honest notes about extras — is what turns each check-in from a guess into a decision.
The starting documents your vet sets
Keep the programme's founding page safe: the initial weight and body condition assessment, the target weight or range your vet set, and the date the plan began. Add the agreed feeding prescription in your vet's own terms — which food, what daily amount, how it is divided across meals — because this page is the reference every later argument about quantities gets settled against. If your vet set an exercise expectation or flagged joints, thyroid history or other health factors shaping the plan, note those here too, since they explain why this dog's programme may be deliberately slower than another's.
The weigh-in log itself
Record every weigh-in with its date, the weight, and where it was taken, because different scales disagree enough to create false progress or false alarm. Weigh at the clinic where possible, at a similar time of day, and note anything that could distort a single reading. Plot the entries in order rather than reading them one at a time; the trend across several weeks is the information, and a single week's stall or jump is usually noise from water, coat or scale variation that your vet will discount if the wider trail is steady.
Your home record: food, treats and movement
Between weigh-ins, your notes carry the programme. Keep a simple daily or weekly record of the measured food actually fed, every treat and chew, and any extras — the crust shared at lunch, the second breakfast a family member did not know about. Log exercise honestly as well: walk lengths, active play and rest days. When weight loss stalls, this is the page your vet will study, because stalls usually live here rather than in the plan itself. Recording extras without editing them is uncomfortable and essential; a trail tidied for the vet's approval helps nobody, least of all the dog.
Adjustments and check-in notes
Each time your vet changes the plan — a reduced ration, a different food, a new weigh-in interval — write the change, its date and the reason into the trail at the point it happened. Add a line after each check-in summarising what was agreed and what you are watching for next. Over months, these entries become the programme's story: they show which adjustment actually moved the weight, which made no difference, and when loss was fast enough that the plan was eased to protect muscle and energy. If more than one person in the household feeds her, note who fed what on the shared record each day, because a duplicate meal nobody mentioned is one of the most common hidden reasons a sound plan appears not to work.
Kept this way, the trail makes you a partner in the programme rather than a spectator at weigh-ins, and KinsLe's Pet Passport holds those records together with your dog's health history in one packet your vet can scan before each check-in.