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The wildcat does not dig its own burrows, instead sheltering in the hollows of old or fallen trees, rock fissures, and the abandoned nests or earths of other animals (heron nests, and abandoned fox or badger earths in Europe, and abandoned fennec dens in Africa).
When threatened, a wildcat with a den will retreat into it, rather than climb trees. When taking residence in a tree hollow, the wildcat selects one low to the ground. Dens in rocks or burrows are lined with dry grasses and bird feathers.
Dens in tree hollows usually contain enough sawdust to make lining unnecessary. During flea infestations, the wildcat leaves its den in favour of another. During winter, when snowfall prevents the wildcat from travelling long distances, it remains within its den more than usual.