The wild boar is a wild, omnivorous mammal that lives in the forests of Europe, northern Africa, and Asia. They live in herds; they often enter maize, rapeseed, and potato crops, causing great damage. They are nocturnal animals and their presence is often detected too late. The measures to be taken are to level the land and reinforce protective fences. They can attack humans when they feel threatened, so contact with these animals should be avoided.