Noticed this as well for a website called creatures.com. They show up prominently in search when searching for animal pictures. I believe SOME of the content on the site is human generated, but all of the species images are not. Are you telling me someone managed to get perfect front-facing photos of every single animal there, in photogenic locations, with perfect, consistent lighting?
No way. But I guess Kagi maybe has too many users to review these submissions manually, thoroughly, anyway.