The film tells about the Vivarium veterinary clinic, which works at the Blokhin Cancer Center in Moscow at the Department of Laboratory Animals and where animals are treated that have been abandoned in other hospitals. The film includes the following filming: Part 1: Dogs in the open-air cage of the hospital; the head physician of the clinic S. Zontov sweeps the stairs on the street, the asphalt path; internal view of the premises of the hospital; the veterinarian A. Sergeev examines the X-ray, S. Zontov in the office at the table examines the treatment card; doctors S.Zontov and A.Sergeev are receiving animals brought by the owners: cats, dogs. Part 2. their owners (sync.); doctors S.Zontov, A.Sergeev and K.Serezhkin perform an operation on a shepherd dog. Part 3. The chief doctor of the veterinary clinic "Vivarium" at the table in the office; dogs in the hospital's aviary, barking, one of the dogs is being dragged to the hospital; doctors of the veterinary hospital S. Zontovi A. Sergeev are preparing for an experimental operation on one of the dogs, performing the operation. A woodpecker in a veterinary hospital, he is being treated for a broken wing; S. Zontov removes the seams of the spaniel, A. Samarina's assistant cleans the spaniel's claws, S. Zontov prescribes treatment for the dog, the owner of the dog hugs it, removes it from the table, leads to the exit.