Koala dominant. Older males usually have accumulated scratches, scars, and cuts on the exposed parts of their noses and on their eyelids. The koala's gestation period lasts 33–35 days, and a female gives birth to a single joey (although twins occur on occasion). As with all marsupials, the young are born while at the embryonic stage, weighing only . However, they have relatively well-developed lips, forelimbs, and shoulders, as well as functioning respiratory, digestive, and urinary systems. The joey crawls into its mother's pouch to continue the rest of its development. Unlike most other marsupials, the koala does not clean her
Blinky Bill: The Mischievous Koala Guy Gross composed and produced music and songs, while all lyrics of the latter are written by John Palmer except "You and Me" and "Nutsy's Ballad", where instead are by Mattie Porges. Finally, through The Danglin' Bros. performance, all songs are sung by Robyn Moore and Keith Scott except where indicated below. "Blinky Bill: The Mischievous Koala" grossed $1,903,659 at the box office in Australia. Blinky Bill: The Mischievous Koala Blinky Bill: The Mischievous Koala (credited onscreen as simply Blinky Bill) is a 1992 Australian animated adventure comedy film directed by Yoram Gross and distributed by his Sydney-based production company