The otter has returned to the Italian Alps, in regions from which it had disappeared for decades. In the center it has reappeared in Lazio and Marche.
This presence is added to the southern population, located in Campania and Basilicata. The current estimate of the otter population in Italy remains around 800-1,000 individuals, a number still well below the minimum vital limit of 4,000-5,000. The crossing of the borders of specimens from Austria, Slovenia and France favored the "return to the north"