I've been keeping up with information about the brush fires in Australia. For animal-lovers who would like to help, here are a couple of links:
Wildlife Victoria: Their page for international donations has options for donating in Australian dollars (you do the conversion) or your home currency (your credit card company does the math). At the current exchange rate, $100 USD equals about $152 or $153 AUD.
RSPCA Victoria: Their donation page is a bit less clear. They simply show a $ sign, which I assume is AUD, and the credit card company would do the currency conversion. Contact information is available on the website if you want to be sure.
And if you want to help the humans, the Australian Red Cross is seeking donations.
If you have it to give, be generous!