Neozoa & new species
The term Neozoa (invasive species) refers to species that were introduced, intentionally or not, into a new geographic area. They are also called exotic species. Among the mammals, for example, the brown rat is well known for traveling with humans around the world. The Neozoa often show a completely different population dynamic in the new environment compared to their native habitat. They often have no natural predators and can have a significant impact on native wildlife. In Switzerland two predators are among the invasive species: raccoon and raccoon dog.
In addition to invasive species, there are also animals that are expanding their distribution range in a natural way. Climate change and other environmental conditions may allow a species to colonize a new area: the golden jackal for example.