While watching for wildlife WooFDriver captured this Eastern Grey Squirrel(Sciurus Carolinensis)! They are a tree squirrel that are native to Eastern North America but have been introduced to Europe over the years. They are one of a few mammals that can descend a tree head first. This is due to their hind paws having claws that point backwards for better grip. To protect their food supply, if they feel like they are being watched they will pretend to hide their food and take it elsewhere.
Wikipedia Webpage to learn more about this squirrel