Fence

Fences are used to keep curious people off your land (and items), or to keep your animals from escaping. A single part of fence requires 6 wooden stakes. Fences can be used as a trap-fence, which blocks the way of most large animals and guides them straight into a trap, usually a trap pit. The player must climb over them, and NPCs and some animals are also capable of climbing fences.

In the "Traps" menu (ALT-R) there is the "Build trap-fence" option, that makes the exact same fence as the "Fence" in the "Building options" menu. Fences can be deconstructed to recover the building materials, and they can also be kicked apart with any attack if you are in a hurry (wooden stakes will be destroyed).

List of land creatures that are known to jump across fences:
 * Squirrel
 * Hare
 * Lynx
 * Wolf
 * Weasel
 * Ermine
 * Bear
 * Fox