Venomous snake bites are a rare but potentially deadly risk that we mitigate with anti-venom. However, of the dozen islands where tiger snakes are found they each eat a different group of animals, which we suspect affects their venom and therefore the anti-venom we need to develop to save lives. Carnac Island's seabird-eating tiger snakes contrast with most inland frog/lizard-eating snakes and we want to find out if expressed venom components also differ.