Compare Fossa vs Jaguarundi

The fossa and the jaguarundi are two incredible predators with names that might sound unfamiliar to many, but their physical prowess is legendary. Because they look and act so similarly, they make for an amazing matchup! I am going to break down the fascinating facts for both animals and analyze an epic head-to-head fight comparison.

Here is a detailed comparison of these two stealthy hunters.

Fossa Facts and Information

• The fossa looks remarkably like a small cougar, but it is actually more closely related to the mongoose! It belongs to the family Eupleridae and is the sole living member of the genus Cryptoprocta.
• The body of a fossa is incredibly long and slender, reaching an average length of up to 5 feet (including its massive tail), with an average weight of around 5.5 to 8.6 kg (12-19 lbs).
• Male fossas are noticeably larger and heavier than females.
• They are endemic to the dense forests of Madagascar, an island in the Indian Ocean, making them the island’s largest mammalian carnivore.
• The fossa is a highly solitary animal that is comfortable hunting both high in the trees and down on the ground.
• Fossas have an average lifespan of 15 years in the wild and can live up to 20 years in captivity.
• They have semi-retractable, razor-sharp claws that help them destroy their prey and easily scale massive trees.
• During the mating season, male fossas become highly aggressive and will fiercely fight each other to win the right to mate with a female.
• Sadly, because of rapid habitat loss in Madagascar, fossas are currently listed as a Vulnerable/Endangered species.
• The fossa is the undisputed apex predator of the Madagascar forest and hunts a wide variety of prey.
• They mainly hunt lemurs, actively pursuing them through the treetops. There are over 30 species of lemurs in Madagascar, providing a steady diet for the fossa.
• At first glance, their anatomy is so confusing that early biologists struggled to tell whether they were from the cat family, the dog family, or the mongoose family!
• They spend a massive amount of their time in the trees, using their exceptionally long tails for balance like skilled acrobats. They even possess double-jointed ankles, allowing them to climb down trees head-first!
• The fossa is a lightning-fast runner with an amazing sense of sight, hearing, and smell.
• A female fossa has an average gestation period of 88 days and typically gives birth to a litter of 2 to 4 pups (though rare litters of up to 6 have been recorded).

Jaguarundi Facts and Information

• The jaguarundi is a small, unique wild cat closely related to the cougar (in the Puma lineage) and belongs to the family Felidae.
• It is found ranging from northern Mexico down through Central and South America, as far south as Argentina.
• A jaguarundi can weigh anywhere from 3.5 kg to 7 kg (7.7 to 15.4 lbs) depending on its natural habitat and prey availability.
• Just like the fossa, the male jaguarundi is larger than the female.
• The jaguarundi is a solitary hunter that travels vast distances to search for prey if food is scarce in its immediate territory.
• The jaguarundi features an elongated, weasel-like body with a very long tail, a flat head, and short, stocky legs.
• While they are excellent tree climbers, they prefer to hunt their prey on the ground. Unusually for wild cats, they are diurnal, meaning they prefer to hunt during the daytime rather than at night!
• When born, a baby jaguarundi (kitten) has distinct spots all over its body. As they grow up, these spots naturally fade away, much like young cougars!
• The gestation period for a jaguarundi is around 72 days, and a mother typically gives birth to 2 to 4 kittens.
• The average lifespan for a wild jaguarundi is roughly 8 to 10 years, though they can live up to 15 years in captivity.
• Despite having very short legs, a jaguarundi is incredibly explosive and can leap 4 to 6 feet straight into the air to catch a low-flying bird!
• They primarily feed on rodents, fish, small reptiles, rabbits, and ground-feeding birds.
• Historically, Central American villagers would occasionally tame them to help control the increasing population of rodents around human settlements.

Fossa vs. Jaguarundi Comparison Table

Animals	Fossa	Jaguarundi
Kingdom	Animalia	Animalia
Family	Eupleridae	Felidae
Genus	Cryptoprocta	Herpailurus
Order	Carnivora	Carnivora
Average Head & Body Length	28–31 in (70–80 cm)	21-30 in (53–77 cm)
Average Weight	12-19 lb (5.5-8.6 kg)	7.7–15.4 lb (3.5–7 kg)
Top Speed	35 mph	40 mph
Area	Madagascar	Argentina, Mexico, Central and South America
Speed	4	4
Force	4	3
Technique	5	4
Stamina	4	4
Intelligence	4	4
Weapon	Semi-retractable claws, sharp teeth	Claws, sharp teeth
Average Life Span	15 – 20 years	8 – 15 years

How We Grade the Fighters: Scores are out of 5 based on physical biology. Force goes to the Fossa (4) due to its slightly larger size and heavier build compared to the Jaguarundi (3). Technique heavily favors the Fossa (5); its semi-retractable claws and double-jointed ankles make it an unmatched arboreal (tree-climbing) assassin, whereas the Jaguarundi (4) is primarily a ground hunter. Both tie in Speed and Stamina (4) as highly agile, relentless pursuit predators. Finally, Intelligence is a tie (4), as both are incredibly cunning, solitary hunters.

The Duel between Fossa and Jaguarundi

This would be an incredibly close and thrilling encounter! Because they live on completely different continents (Madagascar vs. the Americas), they have never met in the wild, making this the ultimate hypothetical matchup. According to wildlife experts, the fossa would likely emerge victorious in a head-to-head fight.

While both animals have very similar physical measurements, sleek bodies, and fierce hunting instincts, it would be a very tough task for the jaguarundi to overpower the fossa. The fossa holds a slight weight advantage and possesses a massive anatomical edge: its hyper-flexible, double-jointed ankles and longer claws allow it to grapple, twist, and climb in ways the jaguarundi simply cannot match in a brawl. The jaguarundi’s incredible jumping ability makes it dangerous, but the fossa’s sheer agility and arboreal dominance give it the fighting edge!

What Do You Think?
Do you agree that the fossa’s climbing agility and slight weight advantage make it the winner, or do you think the explosive jumping power of the jaguarundi could pull off an upset? Scroll back up to the very top of the page to cast your vote in our poll, and drop a comment below to let us know exactly how you think this battle plays out!