Animals are almost the same sleep in the forest, as they like to be free, so they can sleep everywhere they like, further more, they have their territory, so they don't like us to control them, theses animals are called wild ones.
in a cave I guess.
Usually tigers (especially male tigers) do not want to share there bedding grounds. They usually sleep specifically wherever they want, but they prefer secluded areas away from other tigers. Like abandoned or damaged parts of the forests like under rotting or fallen trees. Caves and dugouts seem to fit there liking.