1. Previous Experience: If they have had negative encounters with humans (e.g., being chased, harassed, or having their habitat disrupted), they may be more fearful.
2. Level of Familiarity: Spider monkeys that have grown up in areas with frequent human interaction may be more accustomed to humans and less fearful.
3. Individual Temperament: Like any animal, some spider monkeys are naturally more timid or bold than others.
4. Context: If a spider monkey feels threatened or perceives a human as a potential threat, it will likely be scared.
5. Distance and Behavior: Spider monkeys are intelligent animals and can observe human behavior. If they see humans acting aggressively or intruding into their space, they will likely be scared and try to avoid contact.
It's important to remember that spider monkeys are wild animals and should be observed from a distance. Approaching them can be dangerous, as they may defend themselves with bites and scratches.
If you encounter a spider monkey in the wild, it's best to admire them from afar and respect their space.