Minecraft wiki entry for Wolf, associated text: If a tamed wolf is named with a name tag, its name is shown in the chat when killed.
Wolves can teleport into transparent blocks.
In singleplayer, if the player punches a wild wolf and leaves its field of vision, it stares at the player and does not move at all. Going back into its range causes it to continue pursuing the player.
A hostile wolf can path-find like most mobs, but may sometimes try to jump across a 1–2 block gap to get to a player. A wolf cannot scale a two-block gap, so it falls, but may still manage to damage the player.
Untamed wolves use their hostile appearance when they are attacking sheep, skeletons, foxes, baby turtles or rabbits. They change back once the targeted mob dies or gets out of their range.
Attacking a wild wolf in Peaceful Mode aggravates the wolf and its group, but they do no damage.
A wild pup's head grows significantly when attacked.
If the player attacks a wolf, but then moves a large distance away (e.g. 70 blocks), the wolf still appears hostile, but exhibits neutral behavior.‌[Java Edition only]
Wolves chase bats despite being unable to reach them.[10]
In Bedrock Edition, a glitched adult "red wolf" can be spawned using the command /summon wolf ~ ~ ~ minecraft:on_tame, and a "red pup" can be spawned with /summon wolf ~ ~ ~ minecraft:entity_born. The wolf cannot be tamed, bred or fed, though its model color can be altered by using various dyes. A tamed version of this "red wolf" can be obtained by taming it as soon as it becomes hostile toward a mob such as a skeleton.
A tamed wolf tilts its head toward the player when the player is holding bones, despite it no longer being able to accept bones.
If a player uses the /effect command to give a tamed wolf with max health health boost 255, absorption 255 and Regeneration 255, the tamed wolf’s tail may begin spinning all the way around constantly, or it just points directly up.