Table 4.

Nearest night neighbor proximity definitions.

Proximity	Definition
Contact	The focal chimpanzee is in physical contact with another chimpanzee.
Within Arm’s Reach	The chimpanzee is within arm’s reach of another chimpanzee.
Within 3 Meters	Another chimpanzee is more than an arm’s reach away from the focal chimpanzee but less than 3 m away.
Outside of 3 Meters	The focal chimpanzee is more than 3 m away from another chimpanzee. May be used when the nearest neighbor is in another room.
No Neighbor in Shared Space	The focal chimpanzee has no other chimpanzee in the same room or external area. The chimpanzee is alone in whatever space they occupy.