The pattern came from the 2007 Pattern a day calendar.
I love this! This would make a nicer gift for my canine "nieces and nephews"- better than the usual bunch of rawhide chews!
I have some flannel sheets that I could use- what a great idea! Did you stitch the strips together, or figure out a way to make a continuous strip?
And, I just got my 2007 Pattern-a-Day calendar yesterday- I didn't look through the whole thing, yet, though. What date is this from?