Minecraft wiki entry for Things_not_to_do, associated text: Remember that wolves can also be allied with the player. If the player attacks them, all the wolves around get angry also, and when wolves are angry, they cannot be tamed, similar to zombified piglins. Also, wolves do not despawn on Peaceful mode, but they damage the player in Bedrock Edition and do not damage the player in Java Edition and the Console edition on Peaceful mode. Also, wolves do not drop anything, so there is almost no use in killing wolves; it is much better of an idea to tame them instead.