A buffalo herd
A herd is a social group comprised of animals of the same species.
Buffalo herds were once known to cover three states. (TOS: "The Man Trap")
After Jonathan Archer restored the damaged timeline, a buffalo herd could be seen in the realigning time stream. (ENT: "Storm Front, Part II")
The thralls on the planet Triskelion were also said to belong to a herd. (TOS: "The Gamesters of Triskelion")
Laas once assumed the shape of a volg and joined a herd of the animals as they migrated to the southern continent of Varala. (DS9: "Chimera")