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
HMAS Kangaroo HMAS Kangaroo HMAS "Kangaroo" was a Bar-class boom defence vessel of the Royal Australian Navy (RAN). Although originally ordered as a boom vessel, "Kangaroo" was at one point to be built as the prototype for what became the "Bathurst" class corvettes, but reverted to the boom defence design before construction started. Launched in 1940, the ship spent most of World War II operating the anti-submarine net in Darwin. "Kangaroo" remained in service until 1955, and after several years as an accommodation ship, was sold for scrapping in 1967. In 1937, three ships were ordered by the RAN for use as