Breech Loader
Tiller
In your field, you get crows picking at your crops.
What if, in your Barn and Coop, if it's dirty or unprotected, you got rats? Rats steal eggs and milk, maybe they damage equipment, and make animals unhappy. But if you keep them clean, the rats don't turn up. This would add a little more challenge to people who have a lot of animals on their farms.
Another idea I had was your pet being able to protect your Barns and Coops from said vermin, if you can keep them happy through petting and water.
What if, in your Barn and Coop, if it's dirty or unprotected, you got rats? Rats steal eggs and milk, maybe they damage equipment, and make animals unhappy. But if you keep them clean, the rats don't turn up. This would add a little more challenge to people who have a lot of animals on their farms.
Another idea I had was your pet being able to protect your Barns and Coops from said vermin, if you can keep them happy through petting and water.