Sunshine, a fluffy carpet, and cuddles with the brush: Even a famous cat like Maru needs its care units. And how much the conqueror of all cardboard boxes enjoys them, all cats who find the brushes really stupid should definitely take an example, because it looks really cozy.
Hana, the little cat that you see at the end of the video, is by the way not a big fan of brushing, as you can read under the video: she is just too small and prefers to play.
