Sweden has three species of snakes: the smooth snake
(Coronella austriaca), the adder
and the grass snake
(Natrix natrix). The photo shows a grass snake. All species occur in the Royal National City Park, but visitors only regularly see the grass snake.
The adder has been recently spotted but its occurrence is very local. Sweden has three different species of lizard of which two are to be found in the national city park – the slow-worm (Anguis fragilis) and the common lizard
The grass snake differs from the adder in having a round pupil, yellow spots on its neck and a less jerky undulation. Be on your guard however for the black adder which is common in the archipelago – it often lacks the characteristic zigzag pattern. The grass snake hunts preferable in and around water, and frogs are its favourite food. The grass snake has a winter haunt at the shooting ramp in Stora Skuggan, and the best chance to see it is when it swims in Solfångardammen.