Introduction -- Evolution of leglessness as an advanced state. Anatomy of snakes ; Basal snake diversity and distribution ; Constriction ; Giant snakes myth or monster? ; Man-eating snakes ; Life underground ; Conservation -- The Americas. American blindsnakes (Slender blindsnakes ; Blindsnakes ; Early blindsnakes) ; American basal snake (South American pipesnake) ; American macrostomatan snakes (Meso-American python) ; American boas (Neotropical treeboas ; Rainbow boas ; West Indian boas ; Boa constrictor ; Anacondas ; North America rosy and rubber boas ; Eyelash boas ; Central American dwarf boas ; West Indian dwarf boas and woodsnakes) -- Europe and Asia. European and Asian blindsnakes (Slender blindsnakes ; Blindsnakes) ; Asian basal snakes (Little pipesnakes ; Asian pipesnakes ; Shieldtails) ; Asian macrostomatan snakes (Sunbeam snakes ; Spine-jawed snakes) ; Eurasian sand boas (Sand boas) ; Asian pythons (Short-tailed pythons ; Asian rock pythons ; Reticulated pysthon) -- Africa and the Indian Ocean islands. African blindsnakes (Slender blindsnakes ; Blindsnakes) ; African boas (Sand and ground boas) ; African pythons (Small pythons ; African rock pythons) ; Indian Ocean boas (Madagascan boas ; Round Island boas) -- Australasia and the Pacific Ocean islands. Australasian blindsnakes (Blindsnakes) ; Indo-Australian basal snakes (East Indonesian pipesnakes) ; Australasian pythons (Black-headed python and woma ; Children's pythons ; Water pythons ; Olive pythons ; White-lipped pythons ; Papuan Archipelago pythons ; Carpet pythons ; Rare Australian pythons ; Tree pythons ; Scrub pythons ; Montane pythons ; Sunda Island pythons) ; Pacific boas (Pacific Island boas).