Fire Salamander Facts

Adults measure 6 to 10 inches including the tail and weigh about 1 to 1.4 ounces, with a stocky body, broad head, and rounded (not paddle-like) tail. The smooth skin stays moist for cutaneous respiration — gas exchange through the skin that supplements the lungs — and prominent parotoid glands behind the eyes, plus a row of glands down the back, produce samandarin, a toxic alkaloid that teaches predators to leave it alone after one bad encounter. The black-and-yellow pattern varies enormously by population, from bold stripes to scattered blotches. Like other salamanders, it can regrow lost limbs and parts of its tail. It belongs to the family Salamandridae, and its many subspecies differ in size, pattern, and even breeding mode.

Fire salamanders occupy moist deciduous and mixed forest across much of central and southern Europe — France, Germany, Spain, Portugal, Italy, and east through Poland, Czechia, Slovenia, and Ukraine. They favour hilly and montane woodland with deep leaf litter, fallen logs, and rocky cover near streams or ponds. Clean, slow or standing water is essential because the larvae develop in it, even though adults are almost entirely terrestrial, and the species is rarely found far from forest cover or on open, dry ground.

Fire salamanders are carnivores, taking insects, earthworms, slugs, spiders, woodlice, and millipedes from leaf litter and under logs. They forage at night or in humid, overcast weather, using scent and vision to find slow-moving prey, which they seize with a quick snap of the tongue or a direct bite and swallow whole. The aquatic larvae eat small water invertebrates and will prey on other amphibian larvae — including smaller fire salamander larvae — when food is short.

Fire salamanders are largely solitary and don't defend territories, though individuals often return to the same shelters. They are nocturnal or active in damp, overcast conditions, spending the day hidden under bark, rocks, or litter to avoid predators and drying out. Threatened, a salamander may arch its back, raise its tail, and ooze samandarin from its glands. In colder parts of the range they hibernate through winter in burrows and crevices, re-emerging in spring.

Reproduction sets the fire salamander apart from most amphibians. In most populations the female doesn't lay externally fertilized eggs; instead the male leaves a sperm packet (spermatophore) that she takes up internally, and the eggs develop inside her for months. She then gives birth directly to fully formed aquatic larvae in a stream or pool — ovoviviparity — usually 20 to 40 at a time, though some populations lay eggs in water that hatch in about two weeks. The larvae breathe through gills and grow legs before metamorphosing into land-dwelling juveniles over a few months. Maturity comes at two to five years, and fire salamanders are notably long-lived: commonly 10 to 20 years in the wild, and close to 50 recorded in captivity.

The fire salamander is now Vulnerable, raised from Least Concern as an emerging fungal disease became clear. Logging, farming, and development shrink and fragment its forest and breeding sites, and water pollution degrades the streams its larvae need. The sharpest new threat is the chytrid fungus Batrachochytrium salamandrivorans (Bsal), which causes lethal skin lesions and has crashed local populations in the Netherlands, Belgium, and Germany. Road deaths during seasonal migrations to breeding streams add further pressure.

• IUCN Red List of Threatened Species: Salamandra salamandra
• AmphibiaWeb: Salamandra salamandra
• Encyclopedia Britannica: Salamander
• Natural History Museum, London: Amphibians and Reptiles