Thorny devil
The thorny devil is an Australian agamid lizard covered in sharp spines. It lives in arid habitats and specializes in eating ants.
Capillary action: The movement of liquid through narrow spaces without external force, driven by surface tension and adhesion. Channels between its scales can draw water toward its mouth from wet surfaces.
Agamidae: A family of Old World lizards that includes bearded dragons, water dragons, and the thorny devil. This family places the thorny devil among its closest taxonomic relatives.
Water balance: The regulation of water intake, storage, and loss in an organism. Its skin channels offer a distinctive way to study water acquisition in a dry environment.
Bearded dragon: A group of Australian agamid lizards in the genus Pogona, often kept as pets. A close relative with a broader diet and less extreme specialization for ant-eating.
Cutaneous water absorption: The uptake of water through an animal’s skin. The thorny devil can collect moisture through channels in its skin and move it toward its mouth.
Moloch horridus: The scientific name of the thorny devil, the sole species in the genus Moloch. This binomial identifies the species discussed on this page.
Stable isotope analysis: A method that uses isotope ratios to investigate an organism’s diet, movement, or environmental conditions. Isotopes can help researchers examine the lizard’s diet and ecological relationships.
Horned lizard: A North American lizard in the genus Phrynosoma, known for its flattened body and crown of horns. It shares a spiny profile and ant-rich diet, but belongs to a different lizard lineage.
Myrmecophagy: A feeding strategy in which an animal specializes in eating ants or termites. Ant specialization places the lizard within this broader feeding strategy.
Australian deserts: Arid regions of Australia characterized by low rainfall, sparse vegetation, and large temperature swings. These landscapes form the thorny devil’s principal habitat.