Wolves now can hold sword and SPIN-ATTACK with them!
Drop a sword to a wolf and see what happens!
Right-click and crouch to take sword from wolf.
Adding your own swords:
Out of the box wolves will use every vanilla sword and almost every modded one, so most people never need to touch this. If a sword from another mod is being ignored, you can add it yourself with a datapack.
Keep "replace": false so your list is added to the built-in one instead of wiping it. Reload with /reload or by rejoining the world.
To stop wolves using a sword, use the same setup but name the file swords_excluded.json instead. Exclusions win over everything, so this is how you ban a weapon that the mod picks up automatically. A wolf already carrying a sword you just banned will drop it on the ground.