Mob Bucket

The Mob Bucket is a tool that lets you capture any living mob (except players) and carry it with you. Simply right-click on a mob to scoop it up, preserving its full state including health, name, and equipment. To release your captured mob, right-click on any block surface and it will spawn on the face you clicked. Hovering over the bucket in your inventory will show which mob is currently stored inside, or indicate that it is empty.