- "This ain't a rescue mission, ape. You're on your own."
- ―Steve Haines
Monkeys are animals that appear in Grand Theft Auto V and Grand Theft Auto Online Although not appearing in the wild, they appear in the missions "Monkey Business" and a Setup Mission for "The Humane Labs Raid".
The Rhesus monkeys appear in the mission "Monkey Business" inside the Humane Labs and Research Facility. The monkeys are all in cages, and appear to be in a severely agitated state, possibly suffering from the effects of animal testing or due to the shootout. During the mission, at some point Haines will kick one of the cages, making a random comment before leaving. They can be shot by Michael.