Answers for every stage of your pet's life

Free calculators, at-home health checks and guides that show their sources, for dog and cat owners. Choose your pet, then tap where they are in life.

Common advice, checked against the research

Some of what owners are told doesn't hold up. These are the corrections our guides are built on.

Puppies need five minutes of exercise per month of age.

No study is behind that number. In a study of 501 large-breed puppies, off-lead play on soft ground went with lower hip dysplasia risk.

Read the puppy exercise guide

A negative heartworm test means your dog is clear.

The test can't detect an infection until it is roughly seven months old, so it reports on the past.

Read about heartworm testing

Daily pills are the cheap way to treat a hyperthyroid cat.

Pills plus rechecks usually overtake a one-time radioiodine cure within one to three years.

See the cost comparison

A heart murmur in a cat means heart disease.

In 780 healthy-looking cats, about 70% of murmurs were harmless, and some cats with heart disease had none.

Read about cat heart murmurs

Pet tools

Search all tools
Health checks at home10 tools
Age, weight and food7 tools
  • Dog Age CalculatorFind out how old your dog is in human years — based on size and breed, not the outdated 7x rule.
  • Cat Age CalculatorConvert your cat's age to human years using the latest feline aging research from the AAFP.
  • Dog Weight CalculatorEstimate your puppy's adult weight or check if your adult dog is at a healthy weight for their size.
  • Cat Weight CalculatorCheck if your cat is at a healthy weight for their breed and sex, or estimate how large your kitten will grow.
  • Pet Weight CalculatorCheck if your dog or cat is at a healthy weight using breed-based ranges and a quick Body Condition Score check.
  • Pet Food Calorie CalculatorFind out exactly how many calories your dog or cat needs per day based on weight, age, and activity.
  • Raw Feeding CalculatorGet daily raw food portions (80/10/10) for your dog or cat, plus an estimated monthly and annual cost.
Pregnancy and breeding5 tools
  • Dog Pregnancy CalculatorEnter your dog's mating date to get her estimated due date, delivery window, and week-by-week pregnancy guide.
  • Cat Pregnancy CalculatorEnter your cat's mating date to get her estimated due date, delivery window, and a week-by-week pregnancy guide.
  • Dog Heat Cycle CalculatorPredict your dog's next heat, fertile window, and each stage of her estrous cycle based on her last heat date and size.
  • Cat Heat Cycle CalculatorPredict your cat's next heat, fertile window, and each stage of her estrous cycle — based on her last heat date.
  • Orphaned Kitten Bottle Feeding CalculatorFormula per feed, feeds per day and the interval — from body weight, with a stomach-capacity check.
Vet visits and vaccines7 tools
Costs and insurance10 tools
Training and behavior8 tools
Safety, travel and life changes5 tools

Latest guides

All guides
  1. Cat Kidney Disease Cost by Stage — and What a High SDMA Result Actually Means

    Chronic kidney disease in cats costs very different amounts at IRIS stage 1 and stage 4. Itemized costs per stage, why the renal diet is the best-value spend, and what to do when SDMA is high but creatinine is normal.

    Pet Costs, October 22, 2026
  2. Dog Dementia: The Signs, the Night-Time Problem, and What Treatment Costs

    Canine cognitive dysfunction is common in old dogs but rarely diagnosed. How to tell it from normal aging, what to rule out first, what helps with night-time waking, and what selegiline, diets and rechecks cost.

    Dog Health, October 22, 2026
  3. Rabbit Spay and Neuter Cost — and Why the Cheapest Quote Isn't Always the Best Deal

    Rabbit neuters typically cost $390–$550 and spays more, with quotes ranging from about $140 to $1,500. What drives the price, why anesthesia experience matters more for rabbits than for cats or dogs, and what newer research says about uterine cancer.

    Pet Costs, October 22, 2026
  4. Cat Diabetes Treatment Cost: Insulin vs the Once-Daily Oral Drugs, and Why the First Months Matter Most

    A diabetic cat typically costs $1,700–$6,400 in the first year. What drives the number: insulin or an oral SGLT2 drug, home testing instead of clinic curves, and whether the cat reaches remission.

    Pet Costs, October 20, 2026
  5. Cat Heart Murmur: What It Does and Doesn't Mean

    In a study of 780 healthy-looking cats, about 4 in 10 had a murmur, and most of those murmurs were harmless. Some cats with heart disease have no murmur at all. Why the stethoscope can't settle it, and what can.

    Cat Health, October 13, 2026
  6. Dog Heart Murmur: Why Heart Size Matters More Than the Grade

    A murmur's grade tells you how loud it is, not what to do. The test that decides treatment is heart size, and in the right dogs, starting medication before any symptoms delayed heart failure by about 15 months. What to ask for, and what it costs.

    Dog Health, October 13, 2026

How this site works

PetPawCalc is written by the PetPawCalc Team. We are not veterinarians, so every figure on the site is traced to a published study, a veterinary association or a named source, and tools that touch on health lead with the signs that mean "see a vet now". Read our sources and our editorial policy.

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