In an age of urbanization we see before our eyes is changing behavior in many animal groups. Dogs get in packs and are aggressive, woodpeckers and owls fly and live in the city, pigeons ... they all blessed object. Some gulls do not gravitate to the water, and feel great on landfills, moose walking in the city. What we are facing such a change in behavior as react to these facts? Moot and rhetorical, but we must recognize that change is dictated by human activities.