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Fences are decorative items that can be used for protecting domestic animals and crops.

Creation

There are three types of fence that can be craft: Rough-hewn fence, wooden fence and dry stone fence. Each type has different requirements in making them.

Rough-hewn Fence

Rough-hewn fence requires 2 sticks, 2 logs and an axe to make 12 rough-hewn fence.

Wooden Fence

Wooden fence requires 4 boards and 2 sticks to make 8 wooden fence.

Wooden Fence Gate

Wooden fence gate requires 2 boards and 4 sticks to make 1 wooden fence gate.

Dry Stone Fence

Dry stone requires 6 stone to make 1 dry stone fence.

Usage

Since update 1.16.0, the hitbox of fences is exactly one and a half blocks high, while also generally disallowing all creatures from stepping on them. This impedes both wolves leaping over fences, as well as entities of any kind stepping over the fence from the same height or above.
Fences can therefore be used as a reliable way to keep your own domesticated animals in, while keeping everything else out. It should be noted however that fences do not hinder animals or drifters to spawn inside of the premises they surround - to ensure no entities can spawn inside the area, it is recommended to keep everything inside of the fences on at least light level 7.