Animals can cause great damage to the vineyard by eating and contaminating the grapes, damaging parts of the vine (roots, trunk, shoots, foliage) and transmitting diseases through various microorganisms such as bacteria and viruses. Pests are various beetles and their larvae, butterflies and their caterpillars, aphids, snails, pest birds, as well as vertebrates such as gophers, hares, deer, kangaroos, rabbits, rats, deer, wild boars and voles. However, many insects also appear as beneficial insects and are sometimes used specifically as predators in the vineyard to control other insects.