Leporillus – Australian stick-nest Rats

This genus includes Australia’s famous stick-nest rats—small, sturdy rodents known for building impressive homes out of sticks and other plant materials. There are two species in this genus: the greater stick-nest rat (Leporillus conditor) and the lesser stick-nest rat (Leporillus apicalis), although the latter species is sadly believed to be extinct. What makes this genus unique is that both species were remarkable builders, crafting huge nests that could last for decades or even centuries.

Members of the genus Leporillus were once widespread across arid and semi-arid Australia. They preferred rocky areas, shrublands, and dry woodlands where sticks and twigs were easy to find. These rats were herbivores, feeding mostly on leaves, stems, flowers, and seeds. Even though they lived in tough environments, they were excellent survivors thanks to their calm behavior, low water needs, and—most famously—their nest-building skills.

What sets Leporillus apart from other rodent genera is its incredible engineering. Their nests could be as small as a simple dome or as large as multi-chamber “condos” used by generations of rats. The nests were glued together using their own urine, which dried into a rock-hard coating that preserved the structure for centuries. Because of this, even abandoned nests remain valuable to scientists today, offering clues about the past climate and plant life of Australia.

Unfortunately, the arrival of introduced predators such as cats and foxes caused severe declines in both species. The Greater stick-nest rat survived only because small populations were found on remote islands, and conservation programs later helped reintroduce it to protected mainland areas. The Lesser stick-nest rat didn’t fare as well, with no confirmed wild populations since the 1930s. Still, the genus Leporillus remains a symbol of resilience, creativity, and Australia’s unique wildlife heritage.