All guides
Longer-form reading on PetMathStudio, sourced from NRC, WSAVA, AAFCO, AAHA, and AKC. Most guides pair with a calculator on the same topic — the calc gives you the number, the guide explains the reasoning underneath.
- 01 — 4 guides
Calorie & weight
Most feeding problems do not start with the dog food bag. They start with a dog who is a little rounder than last year, a cup scoop that changed, or a target weight no one has written down yet. These guides put the bowl on a number — and the dog on a body-shape score.
- Dog body condition score (BCS)GuideHow to score 1–9 by feel — the WSAVA chart used in veterinary nutrition references, walked through in plain English for an owner with hands on a real dog.
- Dog calorie deficit safe rangeGuideAAHA's 1-2% body weight per week loss rate explained, with the case for not going faster.
- Dog food calorie calculator: how the bag chart missesGuideWhy bag-chart portions overshoot maintenance MER for most adult dogs.
- Homemade dog food calorie calculatorGuideCalorie-targeting only — never nutrient balancing. Redirect to ACVN nutritionist for complete diets.
- 02 — 2 guides
Age & seniors
A seven-year-old Chihuahua and a seven-year-old Great Dane are not in the same chapter of life. These guides translate age into care stage — when a dog is still adult, when senior screening starts to make sense, and why the old multiply-by-seven rule never matched the research.
- 03 — 6 guides
Breed & growth
Puppies grow unevenly. Legs first, chest later, weight in jumps, and giant breeds on their own slow calendar. This lane is for the owner staring at oversized paws and wondering what normal looks like at six months, twelve months, eighteen — and for the giant-breed family wondering when the dog is finally done.
- Dog ideal weight by breedGuideAKC weight bands for 20 popular breeds, with the body-shape overlay that decides whether the chart number is the right target for your specific dog.
- When do puppies stop growing?GuideThe size-class answer instead of the one-year birthday — toys finishing at 7 months, giants still building bone at 22.
- When does a German Shepherd stop growing?GuideTall at 12 months, still filling out at 18. Working-line vs American show-line size split, and the hip-and-elbow caution that comes with the breed.
- When does a Golden Retriever stop growing?GuideAdult height around 12 months, the chest and shoulders adding for another four — and why a 6-month-old Golden that already looks chunky is being overfed, not growing fast.
- When does a Labrador stop growing?GuideAdult weight by 14–16 months, with the English-show vs American-field build split — and the POMC hunger-gene roughly 1 in 4 Labs carry that quietly raises the feeding stakes.
- When does a Mastiff stop growing?GuideAKC says Mastiffs may not finish until 24 months — the slowest growth plates of any breed, an oversized puppy stage, and panosteitis limping that shifts legs and resolves on its own.
- 04 — 1 guide
Cost & ownership
The adoption fee is the beginning, not the budget. Food, routine care, insurance, grooming, the first surprise vet bill, and a decade of dentals decide what owning this dog actually costs — and most of the line items live nowhere on the shelter paperwork.
- 05 — 1 guide
Safety
This is the lane for the bad five minutes — a dropped chocolate bar, grapes off the counter, raisins in a cookie, a peanut-butter label you suddenly want to re-read. The guides explain what each food does and how vets size the risk; the calculators help you walk into the call with numbers instead of panic.
Looking for the calculator instead? Browse all calculators. Sourcing tiers and review cadence are documented at /methodology.