Cat Facts API

Overview

Measurement Record

What actually happened when we called this API from our own infrastructure. Every value below was recorded by the request, not copied from the provider's documentation.

Request

GET https://catfact.ninja/fact

Result

HTTP 200 · application/json · 141 bytes · compressed

Response time

204 ms (median of 3) · fastest 193 ms

Transport

TLSv1.3 · TLS_AES_256_GCM_SHA384 · certificate issued by Google Trust Services

Browser CORS

Allowed — Access-Control-Allow-Origin: *

Rate limit

100 per window (99 remaining at test time)

Served by

cloudflare

Recorded

2026-08-10

Fields Returned

Top-level fields present in the response we captured, with the type and value we actually received.

Captured Response

Captured from a real request to https://catfact.ninja/fact on 2026-08-10. Long arrays and nested objects are truncated to keep the shape readable.

{
  "fact": "In Ancient Egypt, when a person's house cat passed away, the owner would shave their eyebrows to reflect their grief.",
  "length": 117
}

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

const url = "https://catfact.ninja/fact";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

import requests

url = "https://catfact.ninja/fact"
headers = {}

response = requests.get(url, headers=headers, timeout=30)
response.raise_for_status()
data = response.json()
print(data)

curl "https://catfact.ninja/fact"

What Can You Build?

// Fetch random cat facts data and display it
const response = await fetch(`https://alexwohlbruck.github.io/cat-facts`);
const data = await response.json();
console.log('Cat Facts result:', data);
// Display in your UI
document.getElementById('animal-display').innerHTML = 
  JSON.stringify(data, null, 2);

// Fetch multiple entries from Cat Facts
const response = await fetch(`https://alexwohlbruck.github.io/cat-facts`);
const data = await response.json();
const items = Array.isArray(data) ? data : [data];
items.forEach(item => {
  const div = document.createElement('div');
  div.textContent = JSON.stringify(item);
  document.getElementById('gallery').appendChild(div);
});

// Get daily content from Cat Facts
async function getDailyFact() {
  const response = await fetch(`https://alexwohlbruck.github.io/cat-facts`);
  const data = await response.json();
  return data;
}
const fact = await getDailyFact();
console.log('Today\'s cat facts fact:', fact);

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

How This API Fails

We deliberately sent this API a broken request and recorded exactly what came back on 2026-08-10. Knowing the shape of an error before you hit it makes error handling much easier to write.

{
  "message": "Not Found",
  "code": 404
}

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.