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Marsupial Lion

Thylacoleo carnifex

MammalLifespan cannot be measured directly from fossils; it is generally inferred to be on the order of a decade or more, comparable to similarly sized mammals.

Thylacoleo carnifex, commonly called the marsupial lion, was one of the most formidable predators of Late Pleistocene Australia. D···

Tasmanian Devil

Sarcophilus harrisii

MammalOften around 5–6 years in the wild, with some individuals reaching 7–8 years; longer lifespans are possible in well‑managed care.

The Tasmanian devil is an iconic carnivorous marsupial endemic to the island of Tasmania and the largest living member of the dasy···

Swamp Wallaby

Wallabia bicolor

MammalOften about 6–10 years in the wild; in good care and protected settings it can exceed 12 years.

The swamp wallaby is a common wallaby of eastern Australia’s forests and scrubby edges. It is typically dark‑coated and wary, fe···

Sugar Glider

Petaurus breviceps

MammalOften about 4–7 years in the wild; in good captive care they may live around 10–15 years.

The sugar glider is a small, nocturnal, highly social marsupial famous for gliding between trees. By spreading a membrane between ···

Striped Dolphin

Stenella coeruleoalba

CetaceaCan live for 50+ years, and some studies suggest maximum ages approaching about 60 years.

The striped dolphin is one of the most widespread and frequently encountered offshore dolphins. It is famous for its crisp body st···

Squirrel Glider

Petaurus norfolcensis

MammalOften about 4–6 years in the wild; in well‑managed care they can live around 10 years or more.

The squirrel glider is a nocturnal marsupial of eastern Australian forests, famous for its ability to glide between trees. By spre···

Spotted-tailed Quoll

Dasyurus maculatus

MammalTypically about 3–4 years in the wild (sometimes longer under favorable conditions); captive records can exceed 6 years.

The spotted‑tailed quoll (also widely called the tiger quoll) is one of Australia’s most distinctive marsupial predators. Its da···

Sperm Whale

Physeter macrocephalus

CetaceaTypically lives 60–70 years, and some individuals may survive longer based on long‑term identification studies.

The sperm whale is the largest living toothed whale and one of the ocean’s most formidable deep‑sea predators. It is instantly r···

Southern Right Whale

Eubalaena australis

CetaceaOften lives 70+ years; long‑term photo‑ID studies suggest some individuals may survive for a century or more.

The southern right whale is one of the Southern Hemisphere’s most iconic baleen whales. It is massive and thick‑bodied, lacks a ···

Short-eared Brushtail Possum

Trichosurus caninus

MammalAverage wild lifespan is around 7 years; the longest recorded wild individuals can reach about 17 years.

The short‑eared brushtail possum is a nocturnal, forest‑dwelling marsupial from eastern Australia. It is a robust animal with th···

Short-beaked Echidna

Tachyglossus aculeatus

MonotremataOften 10–20 years in the wild; in good conditions they can exceed 40 years, with records approaching 50 years.

The short‑beaked echidna is one of Australia’s most iconic animals: a mammal that lays eggs, wears a coat of spines, and feeds m···

Rusa Deer

Rusa timorensis

UngulataWild lifespan commonly reaches around 15 years; in good conditions individuals may approach 20 years.

The rusa deer (often called the Javan rusa or Timor deer) is a medium‑large deer from island Southeast Asia. It is notable for it···

Rufous Bettong

Aepyprymnus rufescens

MammalWild lifespan is often around 5–7 years; in managed care individuals can live about 8 years or longer.

The rufous bettong (also called the rufous rat‑kangaroo) is a small marsupial from eastern Australia that looks like a cross betw···

Red-necked Pademelon

Thylogale thetis

MammalMany individuals live about 6–12 years in the wild, with predation and road risk influencing survival.

The red‑necked pademelon is a small macropod of wet forests and rainforest edges in eastern Australia. It is shy and quick, often···

Red-legged Pademelon

Thylogale stigmatica

MammalIn the wild, many individuals live under 10 years, with predation and habitat pressures influencing survival.

The red‑legged pademelon is a small macropod best known for its rusty red “legs” and its preference for dense, wet forests. It ···

Red Kangaroo

Osphranter rufus (syn. Macropus rufus)

MammalWild lifespan is often around 8–12 years; in managed care individuals may reach about 20 years.

The red kangaroo is an iconic mammal of Australia’s inland and one of the largest living marsupials. It is built for open country···

Quokka

Setonix brachyurus

MammalAverage lifespan in the wild is around 10 years; individuals may live longer in managed care.

The quokka is a small wallaby endemic to southwest Western Australia and widely known for its rounded face and “smiling” express···

Platypus

Ornithorhynchus anatinus

MonotremataA typical wild lifespan is around 10 years, and some individuals can live longer in good conditions.

The platypus is one of Australia’s most iconic animals and one of the very few living mammals that lays eggs. It is semi‑aquatic···

Parma Wallaby

Notamacropus parma (synonym: Macropus parma)

MammalAround 6–8 years in the wild; up to ~11–15 years in human care.

The Parma wallaby is a small, shy macropod found in forested landscapes of New South Wales, Australia. It is best known for its co···

Palorchestes azael

MammalUnknown in the wild; by analogy with large diprotodont marsupials it may have lived on the order of 15–25 years, but this is speculative.

Palorchestes azael (sometimes spelled Palorchestes azeal in popular sources) was one of Australia’s most unusual Ice‑Age marsupi···

Northern Brown Bandicoot

Isoodon macrourus

MammalTypical wild lifespan is about 2–3 years; captive longevity records reach about 6.8 years.

The northern brown bandicoot (Isoodon macrourus) is a robust, short‑snouted bandicoot found across northern and eastern Australia···

CarnivoraMaximum observed ages in the wild are about 25 years (females) and 19 years (males); average wild lifespan is often estimated around 12 years (females) and 15 years (males). Captive records exceed 20

The New Zealand fur seal (Arctocephalus forsteri) is an “eared seal” (family Otariidae) known for visible ear flaps, powerful fo···

New Holland Mouse

Pseudomys novaehollandiae

RodentsWild females may live up to about 2 years; generation time is short for a rodent of this size.

The New Holland mouse (Pseudomys novaehollandiae), also known as the Pookila, is a small native rodent restricted to south‑easter···

Narrow-nosed Planigale

Planigale tenuirostris

RodentsWild survival beyond ~2 years appears uncommon; captive records can reach roughly 3 years.

The narrow-nosed planigale (Planigale tenuirostris) is one of Australia’s tiniest marsupial predators—an animal that looks a bit···

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