Australia or no, eating or handling wild slugs or snails is a very bad idea. They can carry so many parasites - they literally have a mucus membrane in constant contact with the ground and dirt, of fucking course they're going to accumulate soil-borne and water-borne pathogens. Most of those pathogens are harmless to the slugs because they've adapted to live with them. We haven't. You can contract anything from tetanus to lungworm to cholera to all flavors of meningitis by consuming uncooked gastropods, and many gastropod parasites can be transmitted by touch alone.

Okay now pretend you're talking to someone who just eats raw slugs willy nilly.