What is the Meaning of This?

This was yesterday! I noticed some...do I dare say..YELLOW leaves? 

 So, I pull out my poster board to glue the puzzles to and what do I see?  FANG MARKS?

I was smitten with my glue design. They both dried nicely overnight. I would like to hang in the garage near my Busing in the Fall puzzle.  Am I the only one that does this?