h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

The Metro Toronto Zoo (in the City of Toronto, Ontario, Canada) is quite a good one. It's absolutely huge -- I don't think we've ever done more than a quarter of it in a day of walking. There are a wide variety of animals, and generally speaking the enclosures are quite large and contain some items of interest to the animals inside. The primate habitats have particularly improved over the last couple of decades, and they are always working on expanding the habitats, particularly for the larger mammals. It's designed to be educational and humane and doesn't (or didn't, when I last saw it in 2001) have the "theme park" atmosphere that so many museums, zoos and galleries seem to be adopting nowadays.

Some of the animals which particularly stand out in my mind from visits over the years: elephants, polar bears, white Siberian tigers, gibbons, gorillas, orangutans, chimpanzees, naked mole rats, flamingoes, those antelope with the pronged horns, yaks, miniature tamarins and golden tamarins.