Frequently Asked Questions
The most-asked questions about marsupials.
What exactly is a marsupial?
Marsupials are a group of mammals whose newborns are born at a remarkably early stage of development and then continue growing while attached to a teat inside a pouch on the mother's belly. They make up the order Marsupialia and are most famously associated with Australia.
Which animals count as marsupials?
The family includes kangaroos, wallabies, koalas, wombats, Tasmanian devils, possums, quokkas, dunnarts, and many others. In total there are roughly 330 living species spread across several distinct families.
Where do marsupials live in the wild?
The vast majority are found in Australia and New Guinea, but a handful of species—such as opossums and shrew opossums—live in Central and South America. They are entirely absent from Africa, Europe, and most of Asia.
What is the single most defining trait of a marsupial?
The marsupium, or pouch, is the hallmark feature: a fold of skin where underdeveloped young cling to a nipple and nurse for weeks or months. This distinguishes them from placental mammals, whose embryos develop almost entirely inside the uterus.
What is a joey?
A joey is the baby of a kangaroo, wallaby, or similar macropod, though the term is also used loosely for pouch young of other marsupials. The word derives from Aboriginal Australian languages and is now standard in everyday English.
What is the largest living marsupial?
The red kangaroo (Osphranter rufus) of the Australian outback holds that title, with adult males reaching about two metres in length and weighing up to 90 kilograms. No other marsupial comes close in sheer bulk.
What is the smallest marsupial?
The long-tailed dunnart (Sminthopsis leptocrotaphus) of northern Australia is often cited, measuring only around six centimetres in body length and weighing roughly 12 grams. A few pygmy possum species are comparably tiny.
How long does a marsupial baby stay in the pouch?
It varies enormously by species: a kangaroo joey spends about 230 days, a koala roughly 22 months, and a Tasmanian devil around three months. In every case the newborn is born blind, hairless, and about the size of a grain of rice.
Are all marsupials herbivores?
No. Koalas, kangaroos, and wombats are plant-eaters, but the Tasmanian devil, quolls, and dunnarts are carnivorous, while many possums are largely omnivorous. Diet varies widely by family and habitat.
Where should a newcomer start learning about marsupials?
A good first step is to familiarise yourself with the major families—Macropodidae (kangaroos and wallabies), Phalangeridae (koalas and possums), and Dasyuridae (devils and dunnarts). From there, a quality nature documentary on Australian wildlife or a visit to a zoo's marsupial exhibit gives a vivid, hands-on introduction.