The grass snake is between 120 and 200 centimetres long. It is brown and greyish green with dark spots above, and may have two yellowish spots highlighted with black at the back of its head. It has a black and white belly.
A common species, the grass snake lives mainly in wetlands, but also in gardens and parks. It is found in Europe, North Africa and Asia.
The grass snake is not dangerous to humans. It hibernates from October/November to April/May. It is a good swimmer and eats amphibians, fish, small mammals and small birds. When in danger it coils, hisses and attacks. When caught, it emits a foul-smelling liquid.