Based on your feedback the following change is now live:

Almost all the cats have been redrawn to make them look more like cats. Because of that they are now also hiding in new places.

Overall, the game got a bit easier because the cats are now less hidden and bigger compared to before.

Sorry to everyone who has created a guide for the game already. ^^

I've wanted this for a while but was super busy with the release of Cats Hidden in Christmas and the new level for Cats Hidden in Jingle Jam.

Merry Christmas everyone! :)

Patrick