I have been to many zoos in the past, but by far this is the best one I have been to. The enclosures are very big for the animals and have lots of space to roam around. The animals look well kept and looked after. There are lots of different animals to see such as - toucan birds, flamingos, variety of monkies, red pandas etc etc. The park is very clean and tidy, the staff are friendly. There is a lovely gift shop they sells all the usual toys, soft toys, stationary etc but they do have lots of homemade sauces, spices, jams etc.
We stayed in stayed in central Zurich and took the tram (Number 6) it takes you direct to the zoo - and only 5 mins walk to the entrance. The tram/ bus tickets are alot cheaper than getting a taxi.
I would highly recommend visiting the zoo.