Damages to resources present a very different extent if we consider the crops that are damaged by animals, the
kind of animals and the vegetative phase in which the damage occurs. We can say that some animals do no damage
to some agricultural crops or natural resources or their effect is so limited that we cannot talk about damage at all. In
other cases, just a little impact of a small number of animals in a particular stage of crop growth, even if it consists
in a reduced utilization of vegetative biomass, can produce remarkable negative effect from the economical point of
view; for example, in many annual crops, such as maize damaged by wild boars, or vineyards at early vegetative
development or at grape maturation by roe deer and wild boar as well. In the forests, an overabundance of animals
(mainly different kinds of deer) represents a threat for the impact on regeneration, growth of trees and survival of
many herb, shrub and tree species, (Côté et al., 2004). The result is highly affected by forest structure, animals
responsible for damages and utilization time, for instance after a coppice cutting (Gill and Beardall, 2001). In
addition, pasture and grassland production can be impacted by wild animal presence, even if these resources are
more able to face herbivore utilization (Trdan and Vidrih, 2008)