Where do they come up with things here?

I'm going to be updating on my New Zealand trip soon but I wanted to just share something with you. Guess what I found in a convenience store the other day? Kangaroo, Crocodile, and Emu Jerky... can you say delicious? Seriously, I don't know if it's because they're so far from the rest of the world but where do Aussies come up with this stuff?! I bought a pack of it to share with my family - so Kirk and Dad, get excited (as I'm sure my mom and Nikki will pass).