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Pet Weight-Loss Tracker

Quick answer

Weekly target weights from your pet’s current weight down to the breed’s healthy-range goal — a safe pace (1–2%/week for dogs, up to 1% for cats), portions per

Figures are estimates from this calculator’s standard formula — adjust the inputs in the tool below for your exact number.

How the Pet Weight-Loss Tracker Works

≈ 7,700 kcal of net deficit per kg of body fat; weekly loss capped at 2% (dogs) / 1% (cats)

The tracker sets the goal weight as the first 10%-step down that lands inside your breed’s healthy adult range, then projects week-by-week weights. Dogs are fed at RER of the target weight × 1.0 and cats at × 0.8 — a cat must never be crash-dieted — and the plan re-derives the deficit as weight falls so the pace stays safe.

  1. 1

    Step 1

    Enter the breed and current weight — the breed’s healthy adult range sets the goal

  2. 2

    Step 2

    Review the weekly targets: each week lists target weight, kcal per day and grams per day

  3. 3

    Step 3

    Weigh weekly and log it — same scale, same time of day

  4. 4

    Step 4

    Compare the trend to the target — the logger shows whether actual weight tracks the plan’s weekly marks

Use Cases

Running a vet-advised slimming plan for an overweight dog or cat

Checking whether the current ration is actually producing loss

Coordinating the household around one weigh-in schedule

Preparing monthly progress numbers for the veterinary team

Tips

  • 1

    Weigh before the morning meal for the most comparable numbers

  • 2

    Treats count: they come out of the daily kcal, never on top

  • 3

    A gram scale for food beats measuring cups on a slimming plan

  • 4

    If weight stalls two weeks running, re-cut portions with your vet — don’t crash-cut

  • 5

    Record body-condition notes alongside weights; the scale isn’t the only signal

Common Mistakes

  • Expecting linear loss — healthy plans zigzag week to week

  • Cutting food sharply to speed results, which risks muscle loss

  • Dieting a growing pet; juniors should not be put in a deficit

  • Rewarding progress with extra treats that erase the week’s deficit

FAQs

How fast should a pet lose weight?

A safe pace is 1–2% of body weight per week for dogs and up to 1% for cats. Faster loss risks muscle loss and, in cats, fatty-liver disease — which is why feline plans run on a gentler energy level and a lower ceiling.

How is the goal weight decided?

From the breed’s healthy adult weight range. Starting from your pet’s current weight, the plan steps down in 10% increments and stops at the first weight inside that range — or stays put if your pet is already within it.

Why does my pet’s daily food change from week to week?

As weight falls, maintenance needs fall too. The projection re-derives each week’s deficit from the current weight, so prescribed energy steps down gradually instead of holding one harsh cut for the whole diet.

How should I weigh my pet between vet visits?

Weekly, on the same scale at the same time of day — hold small pets and subtract your own weight, or use a baby scale. Log every reading in the tracker; a gram scale matters even more for portions, which move in 5–10 g steps.