At Whylla Annika had once milked a black tiger snake from Kangaroo Island which with an evident pleasure that looked like delighted obsession bit inot the rubber lid and discharged a dose of venom almost six times the average quantity from a tiger snake. Chaos rules in the world of snakes, and there are no simple answers. It is a case of two systems meeting. A human one with an ingeniously coded defence mechanism meeting a system of venoms coded to circumvent that defence.