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, Cat Facts leads on measured uptime — Cat Facts at 99.02% versus Open Dog Registry at 41.2% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, Cat Facts or Open Dog Registry?
Cat Facts has the lower median latency in our checks — Cat Facts responds in 259 ms versus Open Dog Registry at 2963 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
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?
Only Cat Facts is browser-friendly — it returns CORS headers over HTTPS. Open Dog Registry needs a server-side call or proxy, so factor that into which one fits a front-end project.
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.