Click, Clack, Moo: Cows That Type is a 2000 children's book by Doreen Cronin. Illustrated by Betsy Lewin, book tells the story of Farmer Brown's cows, who find an old typewriter in the barn and proceed to write letters to Farmer Brown, making various demands and then going on strike when they aren't met.
Click, Clack, Moo: Cows That Type is a 2001 Caldecott Honor book. Based on a 2007 online poll, the National Education Association named the book one of its "Teachers' Top 100 Books for Children." and it is one of the "Top 100 Picture Books" of all time in a 2012 poll by School Library Journal.