Sleepy adult male koala, phascolarctos cinereus chilling on top of the tree with dark brown scent gland in the centre of the white chest to attract female and mark tree territory, close up shot

koala marsupial eucalyptus eucalypt australian bear australia queensland wildlife arboreal zoo healesville animal sleep male female fluffy phascolarctos cinereus mate conservation branch sternal chill reserve species gland brown fur natural grey sedentary chest tree habitat currumbin territory native mark centre breed attract scent park sanctuary moonlit season dark lone pine white