I really enjoyed myself at Krakow Zoo. It is not huge which means you can walk around it at a leisurely pace quite easily, yet there is a wide enough variety of animals to qualify it as a zoo. We saw elephants, big cats, zebras, camels, primates, nocturnal creatures, fish, lizards, petting animals and meerkats! Unfortunately we did not see any giraffes as they are currently having a new home built for them. The park was very quiet and clean and seemed to be well managed.
Entrance was 18 zl and we got there by the 134 bus from the Stadium (which is a little way out of town and can be reached by the 502 bus or others I cant remember). It would be nicer for tourists if there was a bus service from the Old Town rather than the suburbs. If there is an englsh guide book for sale at the entrance I would recommend buying it as the only english information available inside the zoo is the common name of the species.