Pet Care Guides
The methodology behind every calculator, in plain English. Practical, and myth-free.
Dogs
The "multiply by 7" rule is a myth. Here is how dogs really age by size, and the breed-size-adjusted method vets use instead.
Myth-busterHow to size your dog's daily portion using the RER/MER formula vets and nutritionists use, by weight, activity and life stage.
A balanced look at raw and BARF diets for dogs: the pathogen and balance risks the AVMA and FDA flag, and how to feed raw more safely.
How to size a raw or BARF portion: the 2 to 3 percent of body weight rule, puppy and weight-loss adjustments, and the 80/10/10 split, with a worked table.
What a healthy growth curve looks like for toy, small, medium, large and giant puppies, and when each size reaches its adult weight.
What the "human-grade" label legally means, how it differs from feed-grade, and how to judge whether it is worth the price for your dog.
Cats
Fish & Aquarium
Why the one-inch-per-gallon rule fails, and how bioload weighting, adult size, minimum tank size and group size really decide how many fish a tank holds.
Myth-busterThe nitrogen cycle explained in plain English, plus a step-by-step fishless cycling method and the test kit you need to do it right.
Keep going with the same pet
Jump straight into a calculator. Your saved pet pre-fills each one.
Your dog's age in human years, breed-size adjusted, not the Γ7 myth.
Your cat's age in human years using the real feline curve, not the Γ7 myth.
How much to feed: daily calories and cups by weight, activity and life stage.
Tank gallons and liters from your dimensions: rectangle, cylinder, hex and more.
Bioload-based stocking guidance, not the oversimplified 1-inch-per-gallon rule.