Is the Cat Facts API free?

Yes, 100% free with no API key required. Just make a GET request and get a random cat fact back.

How do I get multiple cat facts?

Use the limit parameter: /facts?limit=5 returns 5 random cat facts in a single request.

Does it include breed info?

Yes. /breeds returns a paginated list of cat breeds with details like origin, coat, temperament, and lifespan.

Cat Facts API - Free Random Cat Facts for Developers

TL;DR

What it does: Returns random cat facts via a simple REST API. Also provides paginated cat breed information with details like origin, temperament, and lifespan.

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

No API key needed - just get a fact

Overview

Cat Facts is the most popular free cat facts API on the internet. With a single GET request you get a random cat fact. The API also provides a paginated breed database with origin, coat type, temperament, and lifespan for each breed. No API key needed - just make requests and enjoy the facts.

Live Example

Here's the exact URL to call and the real response you'll get:

The URL to call (random fact):

https://catfact.ninja/fact

Try This URL Now →

The actual response you get:

{
  "fact": "The cat appears to be the only domestic companion animal not mentioned in the Bible.",
  "length": 84
}

What does this data mean?

A random cat fact: cats are notable enough to be left out of religious texts!

fact: The cat fact text - a unique, interesting trivia statement about cats
length: Character count of the fact. Useful for displaying in constrained UI elements

How to use this API

JavaScript Example

// Single fact
fetch('https://catfact.ninja/fact')
  .then(res => res.json())
  .then(data => console.log(data.fact));

// Multiple facts
fetch('https://catfact.ninja/facts?limit=5')
  .then(res => res.json())
  .then(data => {
    data.data.forEach(f => console.log(f.fact));
  });

Python Example

import requests

# Single fact
response = requests.get('https://catfact.ninja/fact')
print(response.json()['fact'])

# 5 facts at once
response = requests.get(
    'https://catfact.ninja/facts',
    params={'limit': 5}
)
for fact in response.json()['data']:
    print(fact['fact'])

# Browse breeds
response = requests.get('https://catfact.ninja/breeds',
    params={'page': 1})
print(response.json())

cURL Example

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

# 3 random facts
curl "https://catfact.ninja/facts?limit=3"

# Short facts only (max 80 chars)
curl "https://catfact.ninja/facts?max_length=80"

# Paginated breeds
curl "https://catfact.ninja/breeds?page=1"

Frequently Asked Questions

How many cat facts are available?: Hundreds of unique facts. Use /facts?limit=100 to get a large batch at once.
Is there a rate limit?: No documented rate limit. The API is free and publicly available. Be respectful with high-frequency calls.
What breed information is available?: Breed name, origin country, coat type, pattern, temperament, and lifespan. Paginated via ?page=X.
Can I filter facts by length?: Yes. Use ?max_length=50 to get short facts only.
Is it available in other formats?: Pure JSON. Single fact returns {"fact": "...", "length": N}, multiple facts returns {"data": [...], "current_page": 1}.
Can I use this in a commercial app?: Yes, the API is free for personal and commercial use with no restrictions.

API Details

Base URL: https://catfact.ninja
Documentation: https://catfact.ninja/
Category: Fun
Authentication: None required - completely free
Endpoints: /fact, /facts, /breeds
Parameters: limit, max_length, page
CORS: Yes