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Extinct Animals API vs Open Dog Registry

Same instrument, two spec sheets — measured, not claimed.

APIExtinct Animals APINEW—Open Dog RegistryNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limit100 req/window · 99 remaining · resets 1783518309Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Extinct Animals API vs Open Dog Registry: common questions

Which is more reliable, Extinct Animals API or Open Dog Registry?

On our scheduled checks, Open Dog Registry leads on measured uptime — Extinct Animals API 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 Extinct Animals API and Open Dog Registry need an API key?

Extinct Animals API needs no key, while Open Dog Registry requires a free API key. If you want to start calling without signup, reach for Extinct Animals API first.

Can I call Extinct Animals API and Open Dog Registry from the browser?

Yes — both Extinct Animals API 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 Extinct Animals API and Open Dog Registry free for commercial use?

Extinct Animals API 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.