Weighing in a way that means something
Weigh the snake on the same digital scale, in the same container, at the same point in the routine — ideally just before a scheduled feed, with an empty stomach and not mid-shed — and record the figure with the date. Weights taken at random points mislead: a snake that has just eaten carries the meal, and one about to shed may hold fluid. A simple tub on a kitchen scale works well; weigh the tub alone first and subtract it, or zero the scale with the tub on it. Early in a rescue's recovery the vet may want weekly weights; later, fortnightly is usually enough to show the trend. What matters is not any single number but the line across weeks — steady gain at the pace the vet set, a plateau that needs discussing, or a loss that should be reported promptly rather than waited out.
Logging feeds, refusals and sheds
Keep a feed log with three columns in practice: what was offered, whether it was taken, and anything notable — a slow strike, a meal taken only when left overnight, a refusal during shed. Record prey type and size exactly as the vet's plan specifies, and note droppings and urates, since output tells you the digestive system is keeping pace with input. Sheds are data too: a complete shed in one piece suggests hydration and condition are improving, while stuck, patchy sheds during a weight-gain plan are worth flagging. Note the snake's behaviour between feeds as well — an underweight rescue that begins exploring, tongue-flicking actively and holding a strong feeding response is showing recovery that a scale alone cannot capture, and vets use those observations when they adjust the plan.
Watching body condition, not just numbers
Numbers can climb while condition lags, so learn to read the body. In a snake gaining weight well, the spine becomes less sharply ridged under your fingers, the body cross-section rounds out from a triangular shape toward the rounded loaf shape appropriate for the species, and loose, wrinkled skin gradually fills. Photograph the snake from directly above and from the side each month on the same plain background; comparing photos shows filling along the ribs that daily handling normalises away. Handle gently and briefly — a recovering rescue is not a petting animal, and stress suppresses appetite. Check the mouth and body during weighing for anything new: mites, wounds, retained shed on the tail tip or eyes. Anything like that goes in the log the same day, because the vet will want to know when it appeared, not just that it exists.
Reporting back to the vet
Agree with the vet how and when you will report: some want the log brought to each review, others a phone update if weight stalls. Treat certain findings as call-now items rather than review items — repeated refusals after a run of good feeds, weight loss across two checks, wheezing or mouth mucus, repeated regurgitation, or a shed that leaves the eyes capped. When you report, give the trend, not a single weigh-in: starting weight, current weight, feeds taken out of feeds offered, last shed quality. Keeping the weights, feed log and monthly photos in the snake's KinsLe Pet Passport means that whole recovery story is in one packet the vet can read in a minute and adjust the plan against with confidence.