Minecraft wiki entry for Piglin_Brute, associated text: Piglin brutes attack players on sight.
Piglin brutes do not retreat from soul fire items, zoglins, or zombified piglins.
Piglin brutes do not perform a "victory dance".
Piglin brutes are not alerted by opening/mining of containers or the breaking of gold-type blocks, or if the player doesn't wear gold armor.
Piglin brutes do not follow players that hold a gold item or a gold-related, unlike piglins. This includes holding a gold item in creative mode.
Piglin brutes do not barter, as the player cannot use a gold ingot on them.
Piglin brutes pick up regular or enchanted golden axes only if walking over them. Unlike piglins, piglin brutes ignore all other golden items or gold ingots, meaning they cannot equip armor. However, they can still be equipped via dispensers or commands.
They do not have a baby variant. This also means they cannot ride hoglins.
They cannot use crossbows.
They attempt to return to their spawn point (regardless of how they were spawned) when not engaged in combat.
They do not join hunts and do not attack hoglins.‌[JE only][1]