Are cat introverts?

I believe that many cats are introverts.

When I look at this poster, I feel as though the introverted person could be replaced by a cat and the poster would still make sense.

The artist does a good job of explaining how introverts need to be treated in order for them to feel comfortable.

Published by Spiffy Kitty House Call Cat Grooming

I groom cats in your own home. I do everthing needed for a soft, clean cat. Claw trims to prevent painful scratches and damaged furniture. Brushing to prevent furballs and matting. Rear-end trims to keep things clean after the litter box visit. Baths for soft, shiny fur. Clients praise my calm, gentle yet firm attitude. Cat sitting visits last 1/2 hour. Daily photo, fresh food and water, playtime, cuddles. A true "cat nanny".