They are Goombas, but with orange fur and a white-tipped cat tail and ears. Their feet are white cat's paws.
They are encountered in the first level of Super Mario 3D World, which is Super Bell Hill. Sometimes, they use the slope to walk up. They can pounce as an attack and can swipe opponents. Unlike other Goombas in the game, Cat Goombas are always on a set path and sometimes drop Super Bells.