Head to head
Giant Jumping Rat vs Fossa
The giant jumping rat and the fossa are both distinctive Madagascar mammals found nowhere else on Earth, but they sit at opposite ends of the food chain: a rabbit-sized, hopping, plant-eating rodent, and the island's largest and most capable predator.
| Giant Jumping Rat | Fossa | |
|---|---|---|
| Scientific name | Hypogeomys antimena | Cryptoprocta ferox |
| Classification | Rodent | Carnivore, in the Madagascar-only family Eupleridae |
| Size | Rabbit-sized | Body 70 to 80 cm plus a long tail, 5 to 10 kg |
| Movement | Hops on long hind legs like a small kangaroo | Climbs down tree trunks head-first |
| Diet | Herbivore, fallen fruit, seeds, leaves, bark | Carnivore, mainly lemurs, also rodents and other small animals |
| Range | Confined to a single forest in western Madagascar | Forest across Madagascar broadly |
| Social structure | Monogamous pairs | Solitary outside the mating season |
| Conservation status | Endangered | Vulnerable |
Giant Jumping Rat vs Fossa: common questions
Does the fossa hunt the giant jumping rat?
It is a plausible target; the fossa's diet includes rodents more broadly alongside its primary lemur prey, so a giant jumping rat encountered within the fossa's range could well be taken, though lemurs make up the larger share of what a fossa eats.
Which of the two has the smaller range?
The giant jumping rat, which is confined to a single forest in western Madagascar, an even more restricted range than the fossa's broader, though still declining, distribution across the island's forests.
How do the giant jumping rat and fossa move so differently?
The giant jumping rat hops on long, powerful hind legs like a small kangaroo to cross the forest floor, while the fossa is built for climbing, with reversible ankle joints that let it descend tree trunks head-first in pursuit of prey.