Cat Chaos Game

I thought I understood the cat rules by now. Can anybody explain why I cannot build anything in the highlighted slot? : r/rootgame

Gamewright - Rat-A-Tat Cat - Card Game, Ages 6+ (2-6 players)

The Pet Collective Cat Face Cat Meme Party Game - Card Game for Cat Lover and Crazy Cat People - Fun Party Pack for Up to 8 Players - Hilarious Family-Friendly

Like Herding Cats Game - Professor Puzzle - Dancing Bear Toys

Where was Rules of the Game filmed? BBC drama is set in the North West

The Cat's Out of the Bag - Game of Idioms by Speak Well

Cat Chaos Card Game - Unique Gifts - Ginger Fox — Perpetual Kid

Kitty Letter: The Game Where Words and Cats Collide

A GAME OF CAT AND MOUTH Game Rules - How To Play A GAME OF CAT AND MOUTH

Wizard Kittens Preview - Board Game Quest