Built on veterinary formulas, not guesswork
Every tool here uses the actual science: age conversions from the size-based veterinary convention and the 2020 UCSD epigenetic study; food portions and water requirements from the RER/MER energy equations; toxicity thresholds for chocolate, xylitol, grapes, and alliums from the Merck Veterinary Manual and ASPCA Animal Poison Control case data; growth curves from published canine growth research; cost and insurance figures from ASPCA, Synchrony, and NAPHIA industry data. Where a number is an estimate, we say so — and for anything urgent, we point you to a real vet. See our methodology for sources.
When to skip the calculator and call a vet
These tools inform; they don't diagnose. If your pet ate something toxic, is behaving abnormally, or you're simply worried, call your veterinarian or a 24/7 poison line — the chocolate toxicity page lists the numbers. A phone call is always the right move when something seems wrong.