Columbia subject headings:
Mammals--Behavior.
Mammals--Ecology.
Primates--Behavior.
Primates--Ecology.
Social behavior in animals.
Harvard subject headings:
Primates--Behavior
Primates--Ecology.
Social behavior in animals.
Princeton subject headings:
Mammals--Behavior.
Mammals--Ecology.
Primates--Behavior.
Primates--Ecology.
Social behavior in animals.