Snakes are elongated, legless, carnivorous reptiles that can be found on every continent except Antarctica. They are ectothermic vertebrates covered in characteristic scales. Many of them are protected by the IUCN list of protection and national Law of Nature Protection. Biggest reasons of endangerment of snakes in Croatia are pollution of soil, water and air, loss and fragmentation of habitats, over-exploitation of land, disappearance of non-invasive traditional agriculture, succession, disease, climate changes, forest fires caused by human activities, importation of invasive alien species, insufficient education of people (substitute of non-venomous species for venomous snakes), unplanned construction of various infrastructures (from wind power to the highway). This paper presents an overview of endangered snake of Croatia and the reasons for their status. I believe that the best way of protecting and preserving the number of snake species in Croatia is: • educate the population about snakes and their importance in the ecosystem • installation of guidelines for making the transition for small wild animals (reptiles) in road infrastructure plans, because of the great casualties on the road • educating the public about fire hazards in areas important for biodiversity and stronger sanctions against perpetrators of such acts • when planning the construction of infrastructure observe cumulative effect of the procedure.