Melbourne has a range of zoo's in easy reach from the city. You can find out all about them at Zoos Victoria. http://www.zoo.org.au/Default.aspx?DN=ac7a272b-6304-4228-a162-731ba6dd45e8
The Melbourne Zoo has world class facilities for animals and visitors alike. One of the current features is the 4 baby tigers who have just turned one. http://www.zoo.org.au/Melbourne_Events/Four_tiger_cubs_turn_one
Healesville Sanctuary focusses more on Australian wildlife and has just introduced an exciting new flight spectacular, Spirits of the Sky, which can be seen in the Flight Arena. http://www.zoo.org.au/Healesville/Spirits-of-the-Sky
One of the most fascinating areas at the Sanctuary is the Australian Wildlife Health Centre, a wildlife hospital, that treats more than 2000 sick and injured native animals every year. Whilst visiting this facility you may see an operation in progress or a range of animals being treated. The facility is also an important training centre for wildlife veterinarians.
At Werribee Open Range Zoo animals are kept in their natural environment and tours are run through the park so you can see the animals as close as possible to how they would be in the wild. You can also experience a number of wildlife experiences including staying overnight on a Slumber Safari. http://www.zoo.org.au/Werribee/Wild_Encounters