Ladder Snake (Rhinechis scalaris) searching refuge in the stony environment of south western Europe. Medium-sized snake averaging 120cm, reaching a maximum of around 160cm Diet of small mammals : mice, rabbits and shrews, but also the occasional spider, insect, or bird. To prey on birds the Ladder Snake will climb trees to search the nests. Not dangerous. If threatened, becomes aggressive and defensive. Defensive signals include hissing and lunging forward with the mouth open. Resists being caught by trying to bite and releasing an offensive odor by emptying the cloaca glands.