Bone

A bone is an item primarily obtained as a drop from skeletons and their variants.

Mobs
Skeletons, wither skeletons, skeleton horses, and strays may drop 0–2 bones upon death. The maximum drop is increased by 1 per level of Looting, for a maximum of 0-5 bones with Looting III.

$$, salmon, cod, pufferfish, and tropical fish have 25% chance to drop 1-2 bones upon death, The maximum drop is increased by 1 to 2 per level of Looting, for a maximum of 2-8 bones with Looting III. Salmon (small and medium size) have 25% chance to drop 1 bone upon death, The maximum drop is increased by 1 to 2 per level of Looting, for a maximum of 2-7 bones with Looting III. The chance of dropping bones increased by 1% per looting level, so up to 28% chance with Looting III

Fishing
Bones can also be obtained by fishing as part of the junk category. The best chance of catching a bone is achieved without the Luck of the Sea enchantment, yielding a 1.1% chance.

Helmet
While a bone cannot be equipped in the head slot in Survival mode, equipping it using commands causes it to appear in the player's mouth.

Taming
Using a bone on a wild wolf has a $1/3$ chance of taming it. Bones cannot tame a hostile wolf or a wolf that has already been tamed. However, bones can be used to attract the attention of the tamed ones.

Trivia

 * As with sticks and blaze rods, bones are wielded as a tool instead of an item.