salamandrar

Salamandrar are a group of amphibians belonging to the order Urodela. They are characterized by their slender bodies, long tails, and usually two pairs of limbs. Unlike frogs and toads, salamanders typically retain a tail into adulthood. Their skin is moist and permeable, requiring them to live in humid environments or near water.

There are over 700 known species of salamanders worldwide, found on every continent except Antarctica and Australia. Their habitats vary widely, from dense forests and caves to streams and ponds. Many salamanders are terrestrial as adults, while others are entirely aquatic. Their diet generally consists of invertebrates such as insects, worms, and snails, though some larger species may prey on small vertebrates.

Salamanders exhibit a remarkable range of reproductive strategies. Some lay eggs in water, which hatch into aquatic larvae, while others lay terrestrial eggs that hatch into miniature versions of the adults, bypassing the larval stage. A unique feature of some salamanders is neoteny, where they retain larval characteristics, such as external gills, throughout their lives and reach sexual maturity in this state.

The life cycle of many salamanders involves metamorphosis, transforming from an aquatic larval form with gills to a terrestrial or semi-aquatic adult form with lungs. Their regenerative abilities are particularly noteworthy; many species can regrow lost limbs, tails, and even parts of internal organs. Conservation status varies among species, with many facing threats from habitat loss, pollution, and climate change.