Was that a squirrel I heard?

Molly enjoyed her walk in the woods this morning. It was still a bit frosty so there were lots of scents for her to follow. She spent a lot of time dashing from spot to spot and rootling in the undergrowth.
However, it seems that she has learnt there is no point in chasing squirrels as they disappear up the nearest tree as soon as she realises they are there!