Minecraft wiki entry for Strider, associated text: Striders can spawn in every Nether biome. Two to four striders spawn on spaces of lava that are two blocks tall with an air block above. In Java Edition striders are the only passive mob in the nether, so spawning attempts are made every 400 game ticks. In Bedrock Edition striders share the animal population cap with hoglins and their spawn rate depends on biome, being impacted by the ability of other mobs to spawn at a given coordinate. For every strider that spawns, there is a 1 in 10 chance of an additional baby strider to spawn riding on top of the previous strider. This behavior is limited to one strider.[1] A baby strider on the adult strider continues to grow although it does not dismount the adult strider once it has grown up. Zombified piglins have a 1 in 30 chance of spawning on top of a strider. If this happens, the strider spawns with a saddle and the zombified piglin spawns carrying a warped fungus on a stick. The zombified piglin also does not despawn (except on Peaceful difficulty). If a strider spawns under lava, it rises out of the lava. in Bedrock Edition, baby striders spawn more commonly than adult striders do, including when spawned by a spawn egg.