https://minecraft.fandom.com/wiki/Minecraft_Dungeons:Mob_Spawner

Appearance The mob spawner's appearance in Minecraft Dungeons is similar in color to its normal counterpart with a few differences, instead of having the skull in the middle, the one in Minecraft Dungeons has its skull design near the base. Unlike its default counterparts, the mob spawner in Minecraft Dungeons is capable of movement via twitching and is seemingly able to control the flame inside it when summoning mobs, seemingly aware of its environment.

Behaviour Mob spawners behave in a similar vein to the spawners in the core game, but light doesn't affect the spawn rate. Mobs are produced in huge waves whenever the hero is within a certain distance from it. It produces a crackling sound while idling. They have possibly the highest health of any regular mob. They can also spawn enchanted with any melee enchantment as any other melee mob. But, they can also have ranged enchantments. Both of these are useless, as mob spawners don't actually do damage to the hero. However, defensive enchantments still work. Mob spawners can currently spawn two mobs: zombies and armored zombies. Even though the Spawner itself does not move, the Gravity enchantment can cause it to (except Nintendo Switch version