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Dog CEO vs RescueGroups

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

APIDog CEOHEALTHY—RescueGroupsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseStanford Dogs datasetUnverified
Free tierUnlimitedFree — limits not published
Rate limitNone publishedUnpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

Dog CEO vs RescueGroups: common questions

Which is more reliable, Dog CEO or RescueGroups?

On our scheduled checks, RescueGroups leads on measured uptime — Dog CEO at —% versus RescueGroups 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 Dog CEO and RescueGroups need an API key?

Neither needs a paid key — Dog CEO is callable with no signup, and RescueGroups is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Dog CEO and RescueGroups from the browser?

Only Dog CEO is browser-friendly — it returns CORS headers over HTTPS. RescueGroups needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Dog CEO and RescueGroups free for commercial use?

Dog CEO allows commercial use on its free tier, and RescueGroups 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.