Fossaフォッサ

Cryptoprocta feroxVU— Vulnerable

The fossa is Madagascar's largest mammalian carnivore, a cat-like member of a uniquely Malagasy family of predators found only across the island's forests. More than half its diet consists of lemurs, which it hunts using powerful forelimbs and a bite to the back of the neck or throat, making it the sole predator capable of taking every lemur species. Females undergo a striking developmental quirk, temporarily developing enlarged, masculinized genitalia that recede with maturity. Habitat loss from deforestation across Madagascar has driven population declines, and the IUCN classifies the species as Vulnerable.

Fossa (reference photo)
Photo: Ran Kirlian / CC BY-SA 4.0 / Source / cropped

Species Data

Classification
Carnivora / Eupleridae Source
Size
Head-body length about 61–80 cm, tail about 65–70 cm
Weight
Males about 6–12 kg, females about 5–7 kg
Lifespan
About 20 years in captivity (no reliable estimates are available for the wild)
Diet
Carnivore Carnivorous, with lemurs making up more than 50% of the diet; also eats mammals such as rodents and tenrecs, birds, reptiles, frogs, and insects. Seizes prey with its forelimbs and kills with a bite to the back of the head or throat, sometimes hunting cooperatively for large prey
Activity
Nocturnal but also active by day (cathemeral)
Distribution
The fossa is endemic to Madagascar, found throughout the island's forested habitats — dry deciduous forests, eastern rainforests, and spiny forests — at elevations from about 440 to 2,000 m. Source

Did You Know?

  • The fossa is the largest mammalian carnivore on Madagascar and the only predator capable of hunting every living lemur species on the island. Source
  • The genus name Cryptoprocta derives from ancient Greek meaning 'hidden anus,' referencing the pouch of skin that partially conceals the animal's anal glands. Source
  • The fossa first arrived at a Japanese zoo in 2010, when Ueno Zoological Gardens acquired the species. Source

Where to See This Species

Operating facilities registered on this site: Japan 1

Ueno ZooTokyoOpened in 1882

Source

Conservation Story

Conservation Status

Vulnerable (VU)

Sources

ja.wikipedia.org

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FAQ

What does a fossa eat?
Lemurs make up more than half its diet, supplemented by tenrecs, rodents, birds, reptiles, and insects. It kills prey by pinning it with its forelimbs and biting the back of the neck or throat. Source
Why is the fossa's genus name unusual?
The genus name Cryptoprocta comes from ancient Greek for 'hidden anus,' referring to a pouch of skin that partly conceals the animal's anal scent glands. Source
Is the fossa related to cats?
Not directly — despite its cat-like appearance, the fossa belongs to Eupleridae, a family of carnivorans found only on Madagascar and more closely related to mongooses than to true cats. Source
How many operating facilities are registered here?
Operating facilities registered on this site: Japan 1 Source

Books & gear

Source: ja.wikipedia.org en.wikipedia.org