Colo is an animal that is farmed across Sanghelios for their meat. Healthy Colo are said to have long, glossy coats. ONI imported some animals to ONI's research facility on Trevelyan, to be bred for their meat for Jul 'Mdama, as well as for testing of a bioweapon.
- Halo: The Thursday War (First appearance)
- ↑ Halo: The Thursday War - page 205