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Fossa (animal)

The fossa is a cat-like carnivorous mammal endemic to Madagascar and the largest native carnivore on the island.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

The fossa is a cat-like carnivorous mammal endemic to Madagascar and the largest native carnivore on the island. Its scientific name is Cryptoprocta ferox, and it belongs to the family Eupleridae, which is closely related to mongooses. The species is listed as vulnerable, with habitat loss identified as a major threat.

Taxonomy

The fossa is classified as Cryptoprocta ferox in the carnivoran family Eupleridae. Historically, it was placed with civets and other viverrids, but modern sources place it among Madagascar’s endemic euplerids.

Description

Fossas have a slender body, long tail, small head, rounded ears, and cat-like appearance. They are described as agile climbers with a body length of roughly 70–80 cm and a tail nearly as long as the body, measuring about 65–70 cm.

Distribution and habitat

The species is native only to Madagascar, where it lives in forest habitats including dry deciduous forest and rainforest. It is associated with forested areas across the island.

Diet and behaviour

Fossas are carnivores that hunt lemurs and also take rodents, birds, reptiles, and other vertebrates. They are skilled climbers and are described as active at various times of day or night.

Conservation

The fossa is considered vulnerable, and multiple sources identify habitat loss and deforestation as major threats. Estimates in the supplied sources suggest there may be around 2,500 individuals in the wild.

Key facts

  • The fossa is endemic to Madagascar and does not occur naturally elsewhere.
  • It is the island’s largest carnivore and an important predator in forest ecosystems.
  • Although it resembles a cat, it is more closely related to mongooses than to felids.
  • Its scientific name is Cryptoprocta ferox.
  • The species is listed as vulnerable, with habitat loss a major threat.
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Canadian context

Fossas are most relevant to Canadian readers through zoo conservation, wildlife education, and broader interest in Madagascar’s endemic mammals.

Frequently asked questions

What is a fossa?
A fossa is a carnivorous mammal native to Madagascar, scientifically named Cryptoprocta ferox.
Is a fossa a cat?
No. It looks cat-like, but it belongs to the family Eupleridae and is more closely related to mongooses.
Where do fossas live?
Fossas are endemic to Madagascar and live in forest habitats there.
What do fossas eat?
They mainly prey on lemurs, but they also eat small mammals, birds, reptiles, and other vertebrates.
Is the fossa endangered?
Sources here describe the species as vulnerable, not endangered, though it faces significant habitat-loss pressure.

References

  1. Wikipediahttps://en.wikipedia.org/wiki/Fossa_(animal)
    Supports: Scientific name, endemic range, and family classification.
  2. National Geographichttps://www.nationalgeographic.com/animals/mammals/facts/fossa
    Supports: Common name, scientific name, and relationship to mongooses.
  3. San Diego Zoohttps://animals.sandiegozoo.org/animals/fossa
    Supports: Size, reproduction, vulnerability status, and native range.
  4. Wiredhttps://www.wired.com/2015/01/creature-feature-10-fun-facts-fossa/
    Supports: Physical description and size.
  5. Discover Wildlifehttps://www.discoverwildlife.com/animal-facts/mammals/fossa-facts
    Supports: Habitat, diet, climbing adaptations, and conservation threats.
  6. Africa Geographichttps://africageographic.com/stories/fossa-5-fascinating-facts/
    Supports: Taxonomic history and population estimate.
  7. Encyclopaedia Britannicahttps://www.britannica.com/animal/fossa-mammal-species
    Supports: Largest carnivore native to Madagascar and general species description.
  8. ZooParc Overloonhttps://www.zooparc.nl/en/animals/fossa
    Supports: Non-cat classification, habitat loss, and population estimate.