VIDEO: Why Saturday's full moon is called a Beaver Moon Sorry, we're having problems with our video player at the moment, but are working to fix it as soon as we can Waiting for Video... The Met Office have explained why Saturday's full moon is referred to as a 'Beaver Moon'. If you take any photos of the moon make sure to send them on to us via a private message on Facebook. The term 'Beaver Moon' dates back to the Native Americans. €20k car bill proof ‘hard border’ is already here!