The latest from the author of the bestselling Cat Butts, A Coloring Book: Hold on to Uranus and prepare for a coloring adventure that is out of this world! Cat Butts In Space (The Feline Frontier) is the #purrfect gift for the #catlover in your life. Planets, aliens, solar systems, spaceships, black holes and lots more get the #catbutt treatment in this unconventional coloring book for people with a hearty sense of humor and a love for all things #outerspace. Cat Butts In Space (The Feline Frontier) is the perfect companion to the cat butt magnet set you and your friends already have. You can color your favorite pages, tear them out and display them proudly on your fridge for all to see, or even mail them to a cat-loving friend.