Conservation working holidays

[veggiewoman]

anyone done one?
I have been looking at the following links and really want to go on one,
has anybody been and what did you think?

http://en.wikipedia.org/wiki/Tiger_Temple

http://www.travellersworldwide.com/conservation.htm

http://www.bornfree.org.uk/srilanka.shtml

[Maisiepaisie]

I only wish I had done this before having the responsibility of kids and animals.