Sheep are prey animals and require a great deal of care and nurture to provide for their needs. They won't/can't lay down to digest their food if they feel threatened. A SHEPHERD LOOKS AT PSALM 23 is a brilliant book.
Oops. hit enter too soon. Sheep are prone to wander and getting into trouble unknowingly. "My sheep no my voice. A stranger's voice they will not follow." John 10: 27