Terms of Use

Last updated 20 August 2026.

Using this site

You may use these calculators and read these guides freely, for personal or professional purposes, at no cost. By using the site you accept these terms and our disclaimer.

What you may not do

• Scrape or bulk-copy the site to republish it as your own.
• Present our calculators or content as coming from a veterinarian.
• Remove attribution from material you are permitted to reuse.
• Attempt to disrupt, overload, or gain unauthorised access to the site.

Quoting and citing us

You are welcome to quote a short passage or a single table with a visible credit and a link to the page it came from. For anything larger, ask first.

Third-party data and licensing

Some reference data is derived from openly licensed research, including growth standards published under a Creative Commons Attribution licence. Where that applies, the original authors and licence are credited on the page and on our sources page. Those licence terms travel with the data: if you reuse it, you must credit the original authors, not only us.

No warranty

The site is provided as is. We make no warranty that it will be uninterrupted, error free, or fit for a particular purpose. Estimates are estimates.

Limitation of liability

To the fullest extent permitted by law, we are not liable for any direct, indirect, incidental, or consequential loss arising from your use of this site or reliance on its content. Decisions about your puppy's health are yours to make with your veterinarian.

Changes to these terms

We may update these terms. The date above shows the current version. Continuing to use the site after a change means you accept the updated terms.