A tailed amphibian, the three-toed amphiuma, Amphiuma tridactyla.

Amphiuma

A tailed amphibian, the three-toed amphiuma, Amphiuma tridactyla.

A tailed amphibian, the Necturus.

Necturus

A tailed amphibian, the Necturus.

A tailed amphibian, the siren.

Siren

A tailed amphibian, the siren.