The most interesting animals in Australia
are the ones that have evolved to fill the very specific niches available on the once-isolated continent. The introduction of new species during European colonization brought animals that weren't so well adjusted, and have strained the local environment to keep up. Domestic cattle
, for instance, have been fouling fields
because the local dung beetle
population simply can't cope with that much cow crap
. This has forced scientists to look elsewhere for a solution.