Better care starts
with better tools
Free, privacy-first tools for puppy care, weight tracking, health checks, and planning — whether you're breeding, raising a new puppy, or caring for your dog.
🗓 Whelping window estimate
Animal Weight Tracker
Record and review animal weights with exact timestamps, milestone notes, and clear visual trends. Built for accuracy during the critical first weeks — and beyond.
- Multiple animals and groups in one session
- Exact date & time entries with safe edit/delete
- Visual trend charts across the whole litter
- Locally stored — nothing leaves your browser
Top 5 Breeds
Most popular guides
Free Dog Tools
Everything you need, nothing you don't
Open instantly — no login, no subscription, no data leaving your browser.
Dog Whelping Date Calculator
Estimate due dates with realistic early and late whelping windows — not just a single date.
Gestation Calculator
Calculate gestation and incubation timelines across 50+ species — dogs, cats, livestock, birds, reptiles and more.
Heat Cycle Tracker
Estimate realistic heat cycle ranges from past cycles — supporting informed planning, not rigid predictions.
Puppy Temperament Test & Home Match
Score puppy temperament across 5 behavioral dimensions, then match each puppy to the right home — or help buyers discover their ideal puppy profile. Two modes, one tool.
Education & Guides
Learn before you track
Evidence-based guidance on puppy care, canine health, pregnancy, and development — written clearly, not like a textbook.
Pregnancy & Whelping
Normal gestation ranges, stages of labor, what's considered typical variation, and how to prepare for delivery.
10 articles →Growth & Development
How healthy puppy weight gain progresses, why trends matter more than single readings, and when to be concerned.
5 articles →Heat Cycles & Fertility
Understanding cycle patterns, natural timing variation, and how long-term records improve breeding decisions.
3 articles →Our Philosophy
Built with care, for people who care
BreedTools does fewer things — and does them well. No subscriptions, no data collection, no complexity you don't need.
Your data stays yours
All tracking data is stored locally in your browser. Nothing is sent to any server — ever.
Honest about uncertainty
Tools show ranges and windows, not false precision. Calculators support planning — not replace your vet.
Released when ready
No half-finished features. No misleading beta labels. Every tool ships complete and usable.
Free with optional support
All tools are free, always. Optional support helps fund future development — never required.
Start tracking today
Open the Weight Tracker and log your first readings in under a minute. No setup, no account, no waiting.