8.5% chance of dropping their unenchanted stone sword which has a random durability.Their skull is always dropped if killed by a charged creeper, though only one head or all heads drop if many are killed by the same charged creeper explosion. Looting increases the chance by 1% per level or 2% per level, for a maximum of 5.5% or 8.5% chance with Looting III. 2.5% chance to drop a wither skeleton skull when killed by a player or tamed wolf.Each level of Looting increases the maximum drop by 1, so that Looting I drops 0-2 coal with an average of 0.75 coal per kill, Looting II drops 0-3 coal with an average of 1.2 coal per kill and Looting III drops 0-4 coal with an average of 1.67 coal per kill. There is a 1⁄ 3 chance to drop a single coal.
The maximum drop is increased by 1 per level of Looting, for a maximum of 0 to 5 bones with Looting III. Spiders do not naturally spawn in this dimension. Spiders and cave spiders spawned in the Nether have a 0.8% chance of spawning a wither skeleton on their back and form a spider jockey. This feature is exclusive to Bedrock Edition.