Weale's Running Frog

Fascinating facts about the Weale's Running Frog

• It grows to 44 mm in snout–vent length and has thin, long limbs.
• Its back has three dark longitudinal bands with pale centers, and the concealed parts of its limbs are yellow to orange.
• When a male calls, it produces a low-pitched creak resembling the sound of a cork being removed from a bottle.
• It is named after English amateur entomologist James Philip Mansel Weale and is the only species in the genus Semnodactylus.
• Unlike many amphibians, this frog thrives in both natural and artificial ponds, whether permanent or temporary, as long as emergent vegetation is present. It flourishes below 1,700 m elevation across grasslands and even fynbos heath in the Western Cape, and it tolerates human disturbance. Its adaptability shows that not all wildlife needs pristine wilderness to survive.

At a glance

About the Weale's Running Frog

Weale's running frog, Semnodactylus wealii, is a sleek, long-limbed amphibian that reaches just 44 mm (1.7 in) from snout to vent. Its dorsal canvas shifts from yellowish-brown to grey, streaked with three dark longitudinal bands each bisected by a pale line, while the flanks bear a solitary dark stripe or a scatter of blotches. When the frog moves, the hidden surfaces of its limbs flash a startling yellow-to-orange hue, a vivid contrast to the muted back. In the breeding season, males reveal a dramatic twist: a black throat that throbs in rhythm with a low-pitched creak, a call that sounds like a cork being pulled from a bottle, echoing across the grasslands where they live. These frogs are grassland specialists, thriving below 1,700 m (5,600 ft) across southern and eastern South Africa, Lesotho, and Eswatini, and even venturing into the fynbos heath of the Western Cape. They are opportunistic breeders, laying eggs in any pond, permanent or temporary, natural or artificial, that sports emergent vegetation. Their tolerance of disturbance allows them to persist in many protected areas and colonise artificial water bodies, showcasing a resilience that keeps them humming across the landscape.

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