Now you've really got me curious. It's five toes and a pad. A photo with a coin next to them would of helped is great for size reference. Just FYI for future reference.

Did a google search. Haven't found anything yet, but these two resources:

In the Snow: Who’s Been Here? by Lindsay Barrett George

Footprints in the Snow by Cynthia Benjamin

Perhaps your local library carries them?

Still looking...