'Being high is good. Vertical Territory Matters (9 July 2012).' Marilyn Krieger reminds us how important vertical space is to the mental well-being of our little friends, especially in a multi-cat household. We take this concept very seriously at CatCentric. Case in point, I once happened to post a picture of my living room during a discussion on cat trees, and subsequently received a compliment on "that awesome cat room". LOL!