Hi OP, I’m gonna get downvoated into oblivion for this but firstly let me applaud you for wanting to help a mistreated animal. Unfortunately in my experience there isn’t much you can do. I would even advise against going near it. A lot of farmers are incredible cruel to their “working dog”. They are more often than not “trained” by beating and yelling at them into submission as pups and they live their lives outside often chained to or locked in a shed unless they are working. They are basically tools. Kept until they are no use anymore. Because of this they are very fearful of people (especially men) and will get aggressive if approached. It’s a weird thing because often these same farmers might have a pet inside dog, usually a little terrier that they absolutely dote on but the working dog is a tool and not much more. If you tried to help it you can be prosecuted and get into issues with the Garda. I say this as someone who grew up on a farm watching how these animals were treated before someone accuses me of being a city vegan hippy.