This doesn’t exactly answer your question, but you might be interested to know about image search by color. Once you pick the animal, you can plug in the colors you have and add the tag for that animal. Source: almost 2 years ago

Are you familiar with the labs.tineye.com/multicolr/ search engine? Maybe that could help you on your quest! Source: over 2 years ago

Also see https://wordpress.org/openverse/ it allows you to filter to only public domain images. - Source: Hacker News / over 1 year ago

Thanks for the HN treatment. As a followup piece, a Google response of this being "a bug". Followup story, my return rate for CC licensed images of "dog" went from 3 to 13. More than that, license info is not displayed (only linked), is frequently wrong, and photo credits often given to the site, not the creator of the image. https://cogdogblog.com/2022/10/google-cc-image-search-better-sad/ Try Openverse for much... - Source: Hacker News / over 1 year ago

Last time I've checked, Creative Commons had their own search for things under their licenses. But now apparently that project got transferred to WordPress and is now named Openverse: https://wordpress.org/openverse/?referrer=creativecommons.org Anyways, I'd argue that's the most comprehensive database of CC-licensed works. - Source: Hacker News / over 1 year ago

> In addition, a searchable database of Creative Commons works would be a welcome addition to the Internet. Openverse is a CC search engine with 600 million items: https://wordpress.org/openverse/ And of course, Google Images supports CC search for images. - Source: Hacker News / almost 2 years ago