When we were in college, my wife had an amazing herding dog. She would say to her, "Sapphire, bring em home!" Sapphire would bolt off into the woods. After a few minutes, the cows would complain. Moo. Moo! Moo!!! We'd walk up to the barn. The cows would all be inside with Sapphire happily guarding the gate.
Sapphire frequently tried to herd the farm cats. The cats didn't think that was too funny but everyone else certainly did.