Search results
Results From The WOW.Com Content Network
A male red kangaroo Red kangaroos, Liverpool Plains, Sydney, c. 1819. Kangaroos are marsupials from the family Macropodidae (macropods, meaning "large foot"). In common use the term is used to describe the largest species from this family, the red kangaroo, as well as the antilopine kangaroo, eastern grey kangaroo, and western grey kangaroo. [1]
It is also known as the great grey kangaroo and the forester kangaroo. Although a big eastern grey male can typically weigh up to 69 kg (152 lb) and have a length of well over 2 m (6 ft 7 in), [ 4 ] the scientific name, Macropus giganteus (gigantic large-foot), is misleading: the red kangaroo of the semi-arid inland is larger, weighing up to 90 ...
Scientists have learned that female kangaroos are attracted to male kangaroos with buff shoulder and arm muscles. The males know this and even strike poses to show off their muscles to the females.
Female reproductive anatomy of several marsupial species. Female marsupials have two lateral vaginas, which lead to separate uteri, both accessed through the same orifice. [33] A third canal, the median vagina, is used for birth. This canal can be transitory or permanent. [7] Some marsupial species store sperm in the oviduct after mating. [34]
The red kangaroo (Osphranter rufus [5]) is the largest of all kangaroos, the largest terrestrial mammal native to Australia, and the largest extant marsupial.It is found across mainland Australia, except for the more fertile areas, such as southern Western Australia, the eastern and southeastern coasts, and the rainforests along the northern coast.
A female suckling her joey at the Darling range in Western Australia. The western grey kangaroo lives in groups of up to 15, and the males compete for females during the breeding season. [14] During these "boxing" contests, they lock arms and try to push each other over. Usually, only the dominant male in the group mates. [8]
Kangaroo joey inside the pouch Female eastern grey kangaroo with mature joey in pouch. The pouch is a distinguishing feature of female marsupials and monotremes, [1] [2] [3] and rarely in males as well, such as in the yapok [4] and the extinct thylacine. The name marsupial is derived from the Latin marsupium, meaning "pouch".
Some writers have suggested [2] that the epipubic bones are a part of a kinetic link stretching from the femur on one side, to the ribs on the opposite side. This linkage is formed by a series of muscles: Each epipubic bone is connected to the femur by the pectineus muscle, and to the ribs and vertebrae by the pyramidalis, rectus abdominis, and external and internal obliques.