 In 1939, the zoo was in possession of only 50 animals such as deer, roe deer, fallow deer, ducks and sheep.The zoo emerged relatively unscathed after the Second World War and in 1945, many animals from other zoological gardens, most notably from the Wrocław Zoo, were transported to Łódź.In 1950, the area of the zoo was expanded and covered 16,64 ha.