Animals APIs

APIs about animals and pets

23 APIs in this category · last checked 2 October 2026
23
APIs listed
17
need no API key (74%)
11
CORS enabled (48%)
23
HTTPS (100%)

This directory lists 23 animals APIs. 10 of them require no API key and support CORS, so you can call them directly from browser JavaScript with no backend and no sign-up. Every entry shows whether it needs authentication, serves over HTTPS and allows cross-origin requests, so you can pick one that fits your stack before you read a single doc page.

Showing 23 of 23 APIs

Dogs

Serves random images pulled from the Stanford Dogs Dataset, organized by breed, with no signup needed and full CORS support for browser based apps.

Auth: No HTTPS CORS: Yes

Cat Facts

Returns a random cat fact from a community maintained open dataset, free to use with no signup, though the public endpoint sends no CORS headers.

Auth: No HTTPS CORS: No

HTTP Cat

Maps any HTTP status code to a matching cat photo at http.cat/code, handy for error pages and demos, free with no signup and no documented rate limit.

Auth: No HTTPS CORS: Yes

Dog Facts

Serves random dog trivia as JSON from a small Flask app on free Heroku hosting, no key required, though the dyno sleeps after an idle hour causing a slow first request.

Auth: No HTTPS CORS: Yes

Dog Facts (Kinduff)

Returns an array of random dog facts as JSON, free with no API key, and supports a number query parameter to request several facts in one call.

Auth: No HTTPS CORS: Yes

Cats

Provides cat images sorted by breed plus voting, favorites, and upload tools, free tier allows 10,000 requests a month with an API key for higher limits.

Auth: apiKey HTTPS CORS: No

Axolotl

Supplies axolotl photos paired with care facts about tanks, water parameters, and diet, free with no API key, though the docs state it has no CORS support.

Auth: No HTTPS CORS: No

HTTP Dog

Matches HTTP status codes to dog photos at http.dog, also offering webp, jxl, and avif formats, free with no signup and no stated rate limit.

Auth: No HTTPS CORS: Yes

AdoptAPet

Lets a single animal shelter or rescue embed its own adoptable pet listings on its website, requiring a free API key requested through an existing account.

Auth: apiKey HTTPS CORS: Yes

Cataas

Delivers random cat images and GIFs with optional tag filters, text overlays, and color filters, free with no API key and no documented rate limit.

Auth: No HTTPS CORS: No

PlaceDog

Generates placeholder dog photos sized by width and height in the URL path, free with no signup, built from photos the community submitted on GitHub.

Auth: No HTTPS CORS: Yes

Movebank

Gives programmatic access to GPS tracking and migration studies for thousands of tagged animals, the curated Data Repository needs no login though some studies are access restricted.

Auth: No HTTPS CORS: Yes

RandomDuck

Returns random duck photos and GIFs plus duck themed HTTP status images, free with no API key, and recommends pinning the v2 endpoint since the default always points to the newest version.

Auth: No HTTPS CORS: No

PlaceBear

Creates placeholder bear photos sized by width and height in the URL, with a grayscale mode available, free with no signup and no stated rate limit.

Auth: No HTTPS CORS: Yes

Xeno-canto

Searches a global library of bird sound recordings by species, location, and recording quality under Creative Commons licenses, free with no API key but capped near 1000 requests an hour.

Auth: No HTTPS CORS: Unknown

MeowFacts

Returns one or more random cat facts as JSON from an open source dataset, free with no API key, with count and language parameters for translated facts.

Auth: No HTTPS CORS: No

eBird

Returns recent and notable bird sighting observations for a chosen region, needs a free API key tied to an eBird account and caps non commercial use at a daily request limit.

Auth: apiKey HTTPS CORS: No

Shibe Online

Serves random images of Shiba Inus, cats, and birds through a few simple endpoints, free with no API key and no stated rate limit, running since 2016.

Auth: No HTTPS CORS: Yes

RandomDog

Picks one random dog image or video from an open community archive and returns its direct file URL, free with no API key and no documented rate limit.

Auth: No HTTPS CORS: Yes

IUCN

Looks up conservation status, population trends, and threats for species on the Red List, now runs on API v4 after v3 was shut down in 2025, needing a new free key.

Auth: apiKey HTTPS CORS: Unknown

RandomFox

Returns a random fox photo with a direct image link and a sharable page URL, free with no API key and no documented rate limit.

Auth: No HTTPS CORS: No

RescueGroups

Searches adoptable pets and rescue organizations by postal code, breed, age, and size across thousands of shelters, free with no request cap but a key must come from a signup form.

Auth: apiKey HTTPS CORS: Unknown

The Dog

Provides dog images organized by breed along with voting, favorites, and upload tools, free tier allows 10,000 requests a month capped at 10 per minute.

Auth: apiKey HTTPS CORS: No

Best Animals and Pets APIs for Developers

An animals API allows developers to fetch animal facts, species data, pet adoption listings, and wildlife imagery directly into their applications. From cute cat pictures to detailed biodiversity records, these APIs cover a wide range of use cases.

Start with Dog.ceo and HTTP Cat for pure image fun with no signup at all, and TheCatAPI or The Dog API when you need breed data behind a free 10,000 request a month key.

For real wildlife data, Movebank opens GPS migration tracks from research studies, Xeno-canto hands you bird recordings under Creative Commons licenses, and RescueGroups or eBird cover adoption listings and citizen science sightings. The recurring trap here is the graveyard of free Heroku hosted toy APIs that never woke back up, so check the live response before shipping.

What to check before you pick one

  • Data breadth: Choose APIs that cover multiple species and provide rich metadata such as habitat, diet, and conservation status.
  • Image quality: For visual apps, verify image resolution and licensing before integrating.
  • Adoption data freshness: Pet adoption APIs should update listings in near real time for accurate results.

Frequently Asked Questions

What are animals and pets APIs?

Animals and pets APIs provide programmatic access to animal facts, species databases, pet adoption listings, wildlife data, and random dog or cat images for use in apps and websites.

Are animal APIs free?

Many animal APIs are completely free with no API key required. Examples include the Dog CEO API and the Cat API, which serve random pet images without authentication.

What can I build with an animal API?

You can build pet adoption platforms, wildlife education apps, random pet image generators, animal trivia games, and species identification tools using the APIs in this directory.

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