Take a look at the underground world of this fox family.
The video shows mama fox moving one of the pups in, in the middle of the night, and we then explore the inside of the den and watch the 4 pups playing. They liked to sleep all piled up inside the hollow log entryway and then they made the main area of the den their playground. There’s lots of space there for little ones to run around.
The parent foxes know this den is a safe place for their pups – coyotes can’t get in – and they use it every year. When the adult foxes are not inside with their little ones they usually keep watch outside in the playpen area.