



A scientist conducts an experiment with a laboratory rat, releasing it from a cage.
The scientist gives the rat a baby, the rat runs away holding the baby in its teeth.
The face of the scientist.
A scientist conducts an experiment with a rat and its baby.
The rat turns a wheel with its front paws.
The rat returns to the cage.
The experimenter makes the rat walk on its hind legs.
Conducting an experiment with three rats.
A laboratory rat on the surface of a table.
1925-1928
USSR




Head of a monkey.
Baboons in a zoo enclosure.
A baby baboon sits on a fence post.
Baboons walk around the enclosure.
A monkey examines its reflection in a mirror, touches the surface of the mirror during an experiment.
A monkey rubs its back and the back of its head against the surface of the mirror.
A monkey grimaces in front of the mirror.
A chimpanzee climbs onto a chair, puts on an apron, and begins to drink tea from a cup with a spoon, imitating a human.
A chimpanzee, sitting at a table, pours water from a bottle into a glass, drinks from the poured glass, there is an abacus on the table and a telephone.
The chimpanzee puts on glasses, picks up the telephone receiver.
A family of baboons in a zoo enclosure.
View of a closed enclosure at the zoo.
A monkey rotates on a simulator for astronauts during an experiment.
A monkey examines parts of the equipment.
Scientists strap a monkey into a seat of a simulator.
A monkey during the rotation of the simulator.
Views of the room with a rotating simulator.
A monkey's hand on the handle of the simulator.
A monkey's face during an experiment.
A scientist closes the lid of the experimental chamber.
1920s 1970s
USSR
Summer