Cat Facts vs Open Dog Registry
Same instrument, two spec sheets — measured, not claimed.
Cat Facts vs Open Dog Registry: common questions
Which is more reliable, Cat Facts or Open Dog Registry?
On our scheduled checks, Open Dog Registry leads on measured uptime — Cat Facts at —% versus Open Dog Registry at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do Cat Facts and Open Dog Registry need an API key?
Cat Facts needs no key, while Open Dog Registry requires a free API key. If you want to start calling without signup, reach for Cat Facts first.
Can I call Cat Facts and Open Dog Registry from the browser?
Yes — both Cat Facts and Open Dog Registry send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are Cat Facts and Open Dog Registry free for commercial use?
Cat Facts has unclear commercial terms, and Open Dog Registry has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.