Terms of use
Applies to PetAge (petagehq.com). Last updated 2026-08-17.
Acceptance
By using this site you agree to these terms. If you do not agree, do not use the calculators or pages.
What this service is
PetAge publishes educational pet age, food, weight, cost, and related calculators with cited sources. It is a BlackStack Systems project for general information only.
Accuracy and no warranty
Outputs are estimates for learning and planning, not veterinary advice and not a diagnosis or treatment plan. Charts and models can be wrong for your animal. Talk to your veterinarian about your pet’s health. See also the disclaimer.
Limitation of liability
To the fullest extent permitted by law, BlackStack Systems is not liable for any loss arising from use of or reliance on this site, including incorrect estimates, downtime, or third-party links.
Intellectual property and permitted use
Site design, copy, and tools (excluding cited third-party data) are for personal reference. Do not scrape abusively or present the tools as veterinary services.
Third-party links
Links to research sources and other sites are for convenience; their policies apply when you leave.
Advertising
This site may use Google AdSense and related third-party advertising cookies. Details and opt-out links are in the privacy policy.
Changes
We may update these terms by posting a new version here with a revised “Last updated” date. Continued use after a change means you accept the updated terms.