Photo of a four-toed salamander on a mossy rock.

    Four-Toed Salamander

    Hemidactylium scutatum
    hellbender, a large brown salamander resting in gravelly streambed

    Hellbender

    Cryptobranchus alleganiensis
    exclamation mark

    Endangered

    No photo available

    Mudpuppy

    Necturus maculosus
    Photo of a small-mouthed salamander.

    Small-Mouthed Salamander

    Ambystoma texanum
    Photo of researcher holding a gilled siren

    Western Lesser Siren

    Siren intermedia nettingi