What do shepherds use their crooks for?

They use the crooks to pull the animals back in if they stray away from the fold (group). It can reach a good distance so if they are on a slope or incline they can easily be reached by extending the cane/stick using the bottom part to hold onto and put the "crooked" part around the neck to pull them to safety. It was also for defense as well. The bible has a lot of information there as well. Check it out!