The experiment is based On the threshold of consciousness) (1968)

Chronicle: I.P. Pavlov observes experimental animals.

The chimpanzees take something out of the box.

Pavlov's experiments with monkeys.

A chimpanzee draws.

Two monkeys communicate with each other.

Scientists in the laboratory listen to the recorded sounds of the voices of great apes.

A monkey in a cage.

A man approaches the cage with a monkey, greets her by the hand.

The monkey is trying to get a tree branch with a stick.

Baby chimpanzees in a cage.

A baby chimpanzee drinks milk from a bottle with a pacifier.

A little monkey is playing in the arena.

Chimpanzees eat grapes.

The chimpanzee is screaming.

A chimpanzee in the hands of an employee.

The employee brought food to the monkeys, they greet him with joyful shouts.

A chimpanzee eats porridge with a spoon.

Chimpanzees eat pineapple.

A chimpanzee reacts to a light signal.

A chimpanzee is playing with water.

Scientists observe how monkeys react to different situations.

A flock of baboons in an aviary.

A cub with its mother.

Communication of females with each other.