This guide is a simplified overview of all changes in Minecraft:The Wild Update update (Template:BE 1.19.x releases), which assumes at least some familiarity with the Minecraft:Caves & Cliffs updates (Bedrock Edition 1.17.x and Bedrock Edition 1.18.x releases).
The first fully-blind mob. In order to find a target, it relies on vibrations, smell, and contact.
Rises out of the floor when summoned. Digs back into the ground when it reverts back to a calm state and doesn't detect a vibration in 60 seconds.
Has the highest health out of all mobs in Java Edition.
Is immune to fire, lava, and knockback.
A warden starts out searching for a target, slowly getting more agitated as it gets more suspicious of a mob. When agitated, it roars and then pursues the target.
A warden instantly becomes agitated when hit by another mob.
Wardens possess an extremely powerful melee attack, which can also disable shields.
Targets that are still being pursued, but are out-of-reach for its melee attack, will be hit with a ranged sonic boom attack, which bypasses shields and armor.
Frogs have three color variations, each depending on the temperature of the biome it spawns in. Temperate biomes spawn orange frogs, cold biomes spawn green frogs, and warm biomes spawn white frogs.
When a mob dies nearby, the catalyst blooms and sends out a bubbling charge, which spreads a patch of sculk and sculk veins whenever it goes over surface blocks like stone, grass blocks, and netherrack.
Bubbling charges only spread sculk veins on other non-surface blocks.
Bubbling charges have a chance to create sculk sensors and sculk shriekers when moving on top of sculk.
The amount of sculk it spreads depends on how much experience the mob would have dropped.
A cave biome that generates in the deepest depths of the world, covered almost entirely by sculk.
The deep dark is oriented to generate underneath mountainous regions, typically those covered by peak biomes like Minecraft:stony peaks and Minecraft:badlands.