To Herd

1. (intransitive) To unite or associate in a herd; to feed or run together, or in company.
2. (transitive) To unite or associate in a herd
3. (transitive) To manage, care for or guard a herd
4. (intransitive) To associate; to ally oneself with, or place oneself among, a group or company.
5. To move, or be moved, in a group. (of both animals and people)