Fossa

The Fossa (voiced by Tom McGrath and Eric Darnell) are the main antagonists of Jaden goes to Madagascar. They are hungry animals that are always attempting to eat King Julien and his subjects. But when Alex the Lion arrives, the Fossa became terrified of him. King Julien and his subjects allowed Alex and his friends to stay with them so that Alex would keep the Fossa away. In the end,  thanks to a setup performed by his friends and the penguins, Alex made sure that the fossa never bothered the lemurs ever again.