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Canadian Amphibian and Reptile Conservation Network - Réseau Canadien de 
Conservation des Amphibiens et des Reptiles

Key to Families of Snakes

Choose the description that best fits the animal of interest. If none fit go back to step one.

  • A.     Rubbery-looking snake, blunt tail, eyes small with vertical pupil, only found in British Columbia.
  • Boidae (Boas et Pyhons)
    Only one species in Canada: Charina bottae (Boa caoutchouc)
  • B.     Rattlesnakes, head wider than neck, eye with vertical pupil, tail with rattle of one or more buttons.
  • Viperidae (Les Crotalidés)
  • C.     All snakes but the Rubber Boa and rattlesnakes.
  • Colubridae (Colubrid Family) NOTE: Based on genetic and behavioural data, the Colubridae have been split into several families .These are:
    Colubridae - Serpents inoffensifs ovipares
    Natricidae - Serpents inoffensifs vivipares
    Dipsadidae - Serpents minces à crochets postérieurs
    Xenodontidae - Serpents robustes à crochets postérieurs
    These family names are included on the identification pages and species descriptions