Red kangaroo has the ability to freeze the development of an embryo until the previous joey is able to leave the pouch. This is known as diapause, and will occur in times of drought and in areas with poor food sources. The composition of the milk produced by the mother varies according to the needs of the joey. In addition, red kangaroo mothers may "have up to three generations of offspring simultaneously; a young-at-foot suckling from an elongated teat, a young in the pouch attached to a second teat and a blastula in arrested development in the uterus". The kangaroo has also
Kangaroo Jack avoid arrest and a trial. As for the kangaroo, now called "Kangaroo Jack", he is still happily hopping around the outback. Kangaroo Jack explains why the film should end with him and closes it with his version of Porky Pig's famous catchphrase: "That's all, bolks!" Initially the film's screenplay was titled "Down and Under" and was described as a mafia comedy in the style of "Midnight Run". The film was shot in Australia in August 2001. When the producers saw test footage, they realized that the film as it was cut did not work. Inspired by early test screenings and