A red bamboo snake, 'Oreocryptophis porphyraceus vaillantii', from a private collection.

A many-horned adder, 'Bitis cornuta'.

An Oriental whipsnake, 'Ahaetulla prasina', at Singapore Zoo.

A bismarck ringed python, 'Bothrochilus boa'.

A European long-nosed viper, 'Viper ammodytes ammodytes', at the St. Louis Zoo.

A Thai bamboo rat snake, 'Oreocryptophis porphyraceus coxi', at Miller Park Zoo.

Malayan krait, 'Bungarus candidu', at the Sedgwick County Zoo.

The Madagascar leaf-nosed snake also known as Langaha snakes, 'Langaha madagascariensi'.

A green tree python, 'Morelia viridis', at the Riverside Zoo.

A red spotted pitviper, 'Trimeresurus jerdonii xanthomelas', at the Fort Worth Zoo.

An albino Nelson's milksnake, 'Lampropeltis triangulum nelsoni'.

An Arizona ridge-nosed rattlesnake, 'Crotalus willardi willardi', at the St. Louis Zoo.

A California red-sided garter snake, 'Thamnophis sirtalis infernalis'.

The red bamboo snake, 'Oreocryptophis porphyraceus pulchra', from a private collection.

A Japanese rat snake, 'Elaphe climacophora', at Pet Paradise.

A tri-coloured hognose snake, 'Lystrophis pulcher', from a private collection.

A Texas coral snake, 'Micrurus tener', with a colour and pattern mutation at the Houston Zoo. Normally this species has colour bands around its body and not spots.

An eastern ribbon snake, 'Thamnophis sauritus sauritus', at the National Mississippi River Museum and Aquarium in Dubuque, Iowa.

Ths is a Blackneck garter snake, 'Thamnophis cyrtopsis ocellatus', from a private collection in Saint Jean de Bournay, France.

A red bamboo snake, 'Oreocryptophis porphyraceus laticincta', from a private collection in Saint Jean de Bournay, France.

Santa Cruz gopher snake, 'Pituophis catenifer pumilu', at the Santa Barbara Zoo.

A side-striped palm pit viper, 'Bothriechis lateralis'.