Can cats experience visual illusions? Show your cat the rotating snakes illusion (available here: http://www.ritsumei.ac.jp/~akitaoka/index-e.html), film it and let me know the result by filling in this form: https://docs.google.com/forms/d/1eFIRSsfica738xH8P67bFNjyyboJDfcctwtpxE1FPac/viewform If enough people do this we might be able to crowdsource some real evidence that cats can see visual illusions! /Rasmus ******************** Sure it is anecdotal evidence, but anyway. The snake illusion is made by Professor Akiyoshi Kitaoka. See his homepage for more nice illusions: http://www.ritsumei.ac.jp/~akitaoka/index-e.html .