The body colour is grey rather than the olive green of "Natrix natrix". Reptiles found include the European adder ("Vipera berus") and grass snake ("Natrix natrix"). Reptiles are represented by grass snake (Natrix natrix) and dice snake (Natrix tessellata). The grass snake ("Natrix natrix") prefers the damper environment of the valley mires. Vertebrate species present include grass snake ("Natrix natrix") and common frog "Rana temporaria".