The Armadillo, a passive mob introduced in Minecraft's 1.20.5 "Armored Paws" update, inhabits various warm biomes. Its tough scutes are crucial for crafting Wolf Armor. Here's how to acquire them:
Acquiring Armadillo Scutes:
Armadillos reside in warm biomes, spawning in groups of two or three. Approaching cautiously is vital, as they defensively curl into a ball if startled.
Suitable biomes include: Badlands, Eroded Badlands, Savanna, Savanna Plateau, Windswept Savanna, and Wooded Badlands.
Two methods exist for collecting scutes:
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Patient Waiting: Similar to chickens laying eggs, an Armadillo sheds a scute every 5-10 minutes. This passive approach requires no tools but can be time-consuming.
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Brush Method: This popular method utilizes a crafted Brush. While often used for examining sand or gravel, it gently removes one scute per use.
Brush Details:
In Java Edition, a fully durable, unenchanted Brush works four times before breaking; in Bedrock Edition, it's five times. Damaged brushes can be repaired using an anvil, preserving enchantments if present. Possible enchantments include Unbreaking, Mending, and Curse of Vanishing.
A Brush requires one Feather, one Copper Ingot, and one Stick, placed vertically in the crafting grid.
The Process:
Slowly approach the Armadillos to avoid their defensive roll. Use the brush to collect scutes. The number of crafted brushes directly impacts the scute yield. Six scutes are needed for a full suit of Wolf Armor, crafted at a crafting table.

Currently, these are the only methods for obtaining Armadillo Scutes in Minecraft.
Minecraft is available now.