Brian,
You could also try Featherdale Wildlife Park. They are out in the suburbs but smaller than Tooronga Zoo. If you go on a weekday when the kids are at school you can enjoy yourself without the crowds. http://www.featherdale.com.au/index.htm

Hope you enjoy your stay in OZ.

Yes Featherdale would defiantly be worth a visit, again they have all sorts of little creatures there, thanks for that Birdy.
Gordon.