Technically, since the book is about a baby fox, it should be called Kit in the Cupboard, although Cub in the Cupboard sounds better. Apparently the writer didn't agree with my reason saying it should be called a kit.
The correct spelling is "cupboard" (a storage unit).
A cub.
A baby lion is called a cub.
They are called Ligers
A lion baby is called a cub.
A baby fossa is called a kit or a cub.
A baby lion is called a cub
their called a Cub
It is called a cub.
Called a cub.
a cub
Baby CheetahA young cheetah is called a cub.a cub