Mortimer forest is a beautiful place to walk, it is only a short distance away. Some of these ancient oaks have collapsed in recent years. Snowy likes this one as an adventure play ground, I don't know what he had spotted here !
I also don't know what he did spot but did you see the see the face of the creature with the pointed ears watching Snowy? Check the part of the tree above Snowy, where it is pretty dark, almost like a cave, or follow that part that looks like a fence post right behind Snowy up wards. Ear is pointing to the right and face to the left. It looks like you took a picture of a oak dwarf.
What a great photo! You asked about the running: eek, I am terrified! I'm taking part in a duathlon next month and haven't a clue what I'm doing. I'm trying to stay fit.