this might be a good place to start: https://www.inaturalist.org/observations?order_by=votes&place_id=any&project_id=43991. (EDIT: nevermind. this actually looks mostly like memes, but the rest of this post is still valid.)
this is the observation that inspired that project: https://www.inaturalist.org/observations/5890862, and some additional discussion here: https://forum.inaturalist.org/t/how-did-the-observation-of-gerald-the-muskrat-go-viral-on-inaturalist/7851/2.