For five years the calendar Cats Let Nothing Darken Their Roar has introduced new, odd, and strange phrases every month.
It started with 30 modest copies in 2006, to over a million in 2007, as it came out from the huge rotary printers of the daily newspaper Helsingin Sanomat, to 500 copies today.

The calendar is printed in four colours on matt paper, and comes with its signature black ribbon binding. This year, to celebrate its 5th anniversary, it will be available in a Special Large 50 x 70 cm. size as well as in its Standard A3 format, each in a numbered edition of 500.