Spinifex Hopping Mouse (Notomys alexis) lives in arid desert across Western Australia. It feeds on seeds and insects. Its conservation status is Least Concern.
Fascinating facts about the Spinifex Hopping Mouse
- A single spinifex hopping mouse can stretch up to 115 mm from nose to base of tail, about the length of a standard ruler, while weighing only 35 g. Its hind feet are so elongated that it bounds across open ground with a horizontal body, tail extended, looking like a living spring.
- After a good rain, spinifex hopping mouse numbers can explode, turning a sparsely distributed desert resident into a temporary swarm that spreads onto new habitats. In normal years they stay confined to sandy country, but post-rain populations surge and occupy loamy mulga flats, melaleuca flats, and even eucalypt woods. This boom-bust cycle shows how tightly their survival is linked to unpredictable desert precipitation.
- Spinifex hopping mice live in family groups of up to ten individuals inside deep burrows that extend about a metre below the surface, with vertical shafts leading upward but no spoil heaps at the entrances. Such communal nesting reduces water loss, as the mice huddle together in a single nest chamber and the burrow environment stays close to one temperature, a crucial adaptation for surviving in arid deserts.
- Spinifex hopping mice can survive without drinking free water because they extract moisture from seeds, insects, and plant material, and their urine is the most concentrated of any mammal, minimizing water loss. Combined with reduced urination and defecation, this physiological efficiency lets them thrive where rainfall may be less than 30 cm per year, illustrating a remarkable adaptation to extreme aridity.
Sources
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At a glance
RangeWestern Australia
HabitatArid desert
DietSeeds and insects
About the Spinifex Hopping Mouse
In the arid expanse of the Australian outback, the spinifex hopping mouse darts across the sandy dunes with remarkable agility, its powerful hind legs propelling it in great bounds as it navigates the treacherous landscape with ease. With its soft, velvety fur and large, watchful eyes, this diminutive creature embodies a perfect blend of vulnerability and resilience, its very existence a testament to the resourcefulness of life in the harshest of environments. As it hops effortlessly across the desert floor, the spinifex hopping mouse is a tiny, fleet-footed king of this unforgiving realm.
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