Clutched in the coils of a golden tree snake, a red-spotted tokay gecko stays clamped onto its attacker’s head in a last attempt at defence. Named for their to‑kay call, tokay geckos are large – up to 40 centimetres (16 inches) long – feisty and have powerful jaws. But they are also a favourite prey of the golden tree snake. This snake, common in the lowland forests of South and Southeast Asia, also hunts lizards, amphibians, birds and even bats, and is one of five snakes that can ‘fly’…