Report Abuse. 1  Group Of Horses. 2  Herd Of Horses. 3  This Site Might Help You.  Drove, Harass, Herd, Stable, 1  Team. A team, harras, rag (for colts), stud (a group of horses belonging to a single owner, string (ponies) 2  Herd. 3  Herd. a herd or a cowboy calls them a cavvy or a strign of horses for differant jobs but herd is  common.