Cat Facts
Random feline trivia served as tidy JSON
Hit one endpoint and get a random cat fact plus its character length, with no key or signup. It is handy filler for chatbots, loading screens, or an intro-to-REST demo. Responses are tiny, quick, and CORS-friendly.
GET https://catfact.ninja/fact
{
"fact": "The domestic cat is the only species able to hold its tail vertically while walking. You can also learn about your cat's present state of mind by observing the posture of his tail.",
"length": 180
}curl "https://catfact.ninja/fact"const res = await fetch("https://catfact.ninja/fact");
const data = await res.json();
console.log(data);import requests
res = requests.get("https://catfact.ninja/fact")
print(res.json())/factPROBEDRandom feline trivia served as tidy JSON
/factsOne or more random facts.
/fact?limit=5Paginated variant with limit parameter.
/api/oauth2-callbackOauth2 Callback — documented GET route.
We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.
Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.
Cat Facts: common questions
Is Cat Facts free to use?
Yes — Cat Facts is a free animals API. Free tier: Free — limits not published. Whether the free tier allows commercial use is unclear — check the provider docs.
Does Cat Facts need an API key?
No — Cat Facts needs no API key or signup. You can call it straight away; rate limits still apply (100 req/window · 96 remaining).
Can I call Cat Facts from the browser?
Yes — Cat Facts returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.
Is Cat Facts up right now?
As of our last scheduled check, Cat Facts is unmonitored. We re-probe it every sweep — the status badge and uptime chart above always show the latest.