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A brown fossa with round ears resting on a rock.
Photo: Dave Pape, Public domain, via Wikimedia Commons

Fossa

Cryptoprocta ferox

Madagascar's largest predator, a sleek, cat-like animal related to mongooses that hunts lemurs in the trees.

About the Fossa

Fossas are 27 to 31 inches long, with a tail almost as long again, and weigh 12 to 19 pounds. They have short brown fur, round ears and cat-like claws. They're Madagascar's largest carnivores and its only predators that can kill the biggest lemurs. They also eat fish, birds, mice and wild pigs. A fossa can travel up to 16 miles in a day.[1]

Quick facts

Scientific name
Cryptoprocta ferox[1]
Size
27 to 31 inches long, plus a 26- to 28-inch tail.[1]
Weight
Females 12 to 15 pounds; males 13 to 19 pounds.[1]
Diet
Carnivore. Mostly lemurs, plus fish, birds, mice and wild pigs.[1]
Habitat
Forests.[1]
Where it lives
Madagascar.[1]
Group life
Solitary except during breeding.[1]
Conservation status
Vulnerable (IUCN Red List, assessed 2015).[2]

Fun facts

  • Fossas can climb down trees headfirst.[1]
  • A fossa's tail is about as long as its body.[1]
  • Fossa pups purr when nursing.[1]

Vocabulary

carnivore
An animal that eats mostly meat.
retractable
Able to be pulled back in, like a cat's claws.
ambush
To hide and wait, then attack by surprise.
predator
An animal that hunts other animals for food.
vulnerable
A conservation label meaning a species faces a high risk of dying out in the wild.

See it in person

These zoos had this animal when we gathered our information, but animals sometimes move. Check the zoo's website or contact the zoo before you visit.

Sources

  1. [1] San Diego Zoo Wildlife Alliance. “Fossa.” https://animals.sandiegozoo.org/animals/fossa (accessed 2026-10-02)
  2. [2] IUCN Red List of Threatened Species. “Cryptoprocta ferox (Fosa).” https://www.iucnredlist.org/species/5760/45197189 (accessed 2026-10-02)

Facts last checked 2026-10-02.

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