Rodents such as the edible dormouse feed preferably on high-energy seeds. But this important food source is not available every year. Edible dormice adapt to this with a pragmatic choice of territory.
A dormouse squeezed into a bird feeder and got too fat to get out. Social media users are in stitches over a greedy dormouse that squeezed into a bird feeder and feasted on seeds until it got too fat ...