Salamander, a tailed amphibian. Salamanders are cold-blooded animals (their temperature changes with that of their surroundings). They have soft skin that is usually moist and must have a humid if not wet environment. Most species are found on land; a few are strictly aquatic. Like other amphibians, salamanders are never found in seawater. Land salamanders are often found under stones and logs. Salamanders are found in North America, Asia, Europe, North Africa, and northern South America.
Salamanders of most species have four limbs; members of a few species have only two. Most salamanders are from 3 to 8 inches (7.5 to 20 cm) long. The largest species, the giant salamander, grows to about 5 1/2 feet (1.7 m); the smallest is a Mexican species that measures 1 1/2 inches (4 cm). Some species are brightly colored; others are quite dull.