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Their diffusion and distribution is influenced by the availability of adequate reproduction sites, consisting of ponds, drinking trough, and reservoirs. The Alpine Newt (Triturus alpestris) is quite widespread in the Park territory, while the Italian Crested Newt (Triturus carnifex) and the Smooth Newt (Triturus (vulgaris) meridionalis) are more localized. The Fire Salamander (Salamandra salamandra), with its characteristic yellow-black colors, is without a doubt one of the most common amphibians living at medium altitudes. Its presence is mainly linked to the availability of watercourses rich in oxygen, enabling the survival and metamorphosis of the larvae. The Alpine Salamander (Salamandra atra) represents an exception: its larvae develop in the womb and after 2-4 years, two already entirely developed salamanders are born. Typical of high altitudes, it has been found in the Park up to 2,500 meters. The Yellow-bellied Toad (Bombina variegata), quite widespread in the Park, spends most of the active season in stagnant water puddles, while the Common Toad (Bufo bufo) and the Common Frog (Rana temporaria) are much more common and adaptable. They reproduce both in ponds and streams, even at high altitudes. Rather localized is the Green Toad (Bufo viridis), which reaches high altitudes and has strictly nocturnal habits. The Tree Frog (Hyla italica) and the Agile Frog (Rana dalmatina) are more common on the southern borders, whereas the Water Frog (Rana synklepton esculenta) and the Pool Frog (Rana lessonae) are less known and studied.
European green toad
(photo by Enrico Canal (CTA-CFS))