Bolam's mouse (Pseudomys bolami) is a species of nocturnal, burrowing rodent in the family Muridae that inhabits the semi arid and southern arid regions of Australia. It has a number of physiological and behavioural adaptations developed to cope with the extremely varied climatic conditions. Many of these adaptations allow it to survive in extremely arid conditions by conserving water. Examples of these adaptations include the ability survive by extracting water from seeds alone, the production of highly concentrated urine and low water content faeces as well as nocturnal activity.