https://www.google.com/search?q=cat or https://www.google.com/search?q=dog then click the paw then click around the page
edit: https://en.wikipedia.org/wiki/List_of_Google_Easter_eggs
edit: https://en.wikipedia.org/wiki/List_of_Google_Easter_eggs
I've tried some of the mentioned easter eggs and they don't seem to work anymore.
yep, some do need to be marked discontinued, like "baby yoda"
some do work here but I'm on Chrome without too much JS blocked: "Cha Cha Slide," "blink tag," "askew," "drop bear."