Salamanders are typically nocturnal. Unlike frogs, they lack the ability to produce
vocal calls and their legs are not significantly longer than their arms.
Some are fully terrestrial and others are fully aquatic.
While most salamanders live just under the soil (and are often
found under rocks and logs), some can bury deep into the soil and others
can climb trees. All are carnivorous, feeding primarily on insects.
Although they are not frequently seen, forests of the
The hellbender is the only North American
species of salamander which reproduces through external fertilization. In all species occurring in
In some salamanders,
the limbs are highly reduced.
The number of digits is reduced in amphiumid salamanders, proteid salamanders, brachycephalid frogs, and some microhylid frogs (Mannaert, 2006).
| About 350 species of salamanders are known
in the world. Of the eight families
of salamanders, seven are represented in
A plethodontid salamander was recently discovered in Asia (the first known from that continent) which differs in the articulations between tarsal bones and possesses two premaxillary bones rather than one (Min, 2005).