Reptiles are air-breathing, cold-blooded vertebrates that have skin covered in scales as opposed to hair or feathers. In northern countries like The Netherlands there are a limited number of species that can survive; to be precise we have 3 snake species and 4 lizard species. They are all rare and hard to found. In the National Park “De Meinweg” I found 2 of them. The typical green ♂ Sand Lizard (Lacerta agilis/Zandhagedis) that looks like a miniature dragon and the aggressive and poisonous (!) ♀ Viper (Vipera berus/Adder). In cool summers the offspring will be born next year; the embryos hibernate inside the ♀ snake body.