I volunteered at the Australia zoo last Summer. I like the Australia wildlife and always was a big fan of Steve Irwin. Seeing this opportunity I knew it was for me. I had a great time and learned a lot. I should say that the location is quite isolated so that is something that you should be aware of. We also were staying in a nearby hostel which was okay but I know that they since then have instead been using homestays which In my opinion is much better and I would have preferred that option but unfortunately that was not possible when I went.
I can really recommend this trip especially now that it includes homestay accommodation and meals.
(why do we have to leave such a long review, I think if you would allow us to leave shorter reviews more people would do it).