There are over 60 species of kangaroo, and only four of these species are generally referred to as kangaroos. The rest are wallabies, wallaroos, rat-kangaroos, pademelons, quokkas and other smaller varieties.
The classification of a kangaroo is as follows:
Kingdom Animalia
Phylum Chordata
Class Mammalia
Infraclass Marsupialia
Order Diprotodontia
Family Macropodidae
Genus Macropus
Australian kangaroos can vary in height depending on the species. The average red kangaroo, the largest species, can stand about 5 to 6 feet tall when fully grown. Other species, like the eastern grey kangaroo, are similarly sized, typically reaching heights of around 4.5 to 6 feet. Overall, kangaroo heights can range between 3 to 8 feet depending on the species.
Australian kangaroo weights vary by species. The red kangaroo, the largest, can weigh between 50 to 90 kilograms (110 to 200 pounds), while the eastern gray kangaroo typically weighs around 40 to 66 kilograms (88 to 145 pounds). Smaller species, like the wallaroo, weigh between 25 to 54 kilograms (55 to 119 pounds). Overall, weight can significantly differ among species and individual animals.
There was once a giant kangaroo, now known as the Procoptodon. It was one of the many species known as Australian megafauna, and became extinct thousands of years ago. The giant kangaroo no longer exists.
There are numerous species of tree kangaroos, but they are not all endangered. Two Australian species are listed by the IUCN as endangered, one of which is the Lumholtz's Tree kangaroo. The Goodfellow's, Doria's, Matschie's, Tenkile and the Dingiso are the most endangered tree kangaroos in New Guinea.
Kangaroos and wallabies cannot be crossed. Although they are both macropods and members of the kangaroo family, the two species cannot interbreed. Some might believe a wallaroo is a cross between the two, but it is not, as it is another distinct species.
The kangaroo and the koala are both native Australian marsupials.
The species name of the red kangaroo is Macropus Rufus.
There are many Australian long-legged marsupials, but the question probably refers to the kangaroo, of which there are over 60 species, including wallabies, wallaroos, potoroos and quokkas.
There is no species of kangaroo known as the Brown Kangaroo. Among the bigger species, there is only the Red Kangaroo and the Eastern Grey and Western Grey.
Kangaroo.
Kangaroos belong to the genus macropus. There are several different species of kangaroo. The most common is the red kangaroo, which is part of the species Rufus.
Australians probably do not have a "favourite" kangaroo, as such. If the word "favourite" can be transposed into "the best known", it would be the Red kangaroo. This is the one that is most prolific, and probably the one most associated with the Australian image. The one that many 'baby boomers' identify with is "Skippy, the Bush Kangaroo", from an Australian children's television series of the 1960s-70s.