Dog Tools
Seven calculators and finders built from the same research behind every TwoDogZoo review — no email required, no app to download, just answers you can use right now.
Dog Age Calculator
Convert your dog’s age to human years — size-adjusted, not the flat ×7 myth.
Calculate age →Harness & Collar Size Finder
Measure once, get a starting size — before you buy, not after it arrives too small.
Find my size →Food & Calorie Calculator
Daily calorie needs by weight, life stage, and activity — then convert to cups.
Calculate calories →Treat & Extras Calorie Budget
How many treats fit in your dog’s day without tipping their calorie balance.
Set treat budget →Why Is My Dog Doing That?
Pick the behavior you’re seeing — get routed straight to the full explainer.
Get answers →Chew & Treat Matcher
Match your dog’s size and chew style to the right chew category — and what to skip.
Find a match →Food Cost Comparison
Compare two foods by real daily cost — often a different winner than sticker price.
Compare cost →