The Fat-tailed Pseudantechinus was first collected in the MacDonnell Ranges,
near Alice Springs.
It is found mainly on rocky hills and breakaways, but also
lives in termite mounds in some parts of its wide range.
Insects form the main
component of its diet and the tail, which is shorter than
the body, becomes very fat when food is plentiful.
predominantly nocturnal, individuals may emerge from shelter
among the rocks to sunbathe and Aborigines take advantage
of this habit to catch them.