Lots of #animals hibernate. #Hedgehogs hunker down, #dormice curl up in a ball, and #bats take to their roosts.  #Hibernation occurs when animals enter a state of almost total inactivity during the winter months.
Some animals rouse themselves from hibernation for a quick snack and a toilet break, before returning to their bed. This helps the animals to keep their strength up and get rid of any waste that would otherwise soil their ‘bed’.

https://www.discoverwildlife.com/animal-facts/do-hibernating-animals-go-to-the-loo