The vocalizations of the relict leopard frog have been described as a "low rumbling 'snore'."[3] Individuals measure 4.4–8.4 cm (1.7–3.3 in), and have a narrow, brown-colored body with darker spots and a beige-colored streak on the upper lip.[3] Relict leopard frogs are most nocturnal.[3]
In the mid-20th century, the relict leopard frog was declared to be extinct.[5] The species was rediscovered in the 1990s in the Virgin River and Muddy River watersheds in Nevada.[5] It is threatened by habitat loss to agriculture and water development as well as invasive species.[1]
