privately owned zoological park partially funded by the city and canton of Zürich. Opened in 1929, the 10-hectare (25-acre) zoo exhibits nearly 2,100 specimens of more than 330 species. It has a good ungulate collection and a breeding group of Humboldt's penguins. Its specialties include vicunas, pygmy hogs, snow leopards, Arabian oryx, and Rothschild's mynah birds. The zoo serves as the repository for the vicuna studbook.