Fossas

"Fossa hungry, fossa eat"

- Fossa

Fossas are medium-sized weasel-like animals that live in Madagascar and prey on lemurs. They appear as the main antagonists in the movie, Madagascar.

Madagascar
The fossas first appeared when they crashed King Julien's party and attempted to eat Mort, but when Alex noticed a spider on his back, he scared the fossas away.

Then when Marty convinced Alex to go on the ship with them, the foosas appeared once again and attacked Marty, Melman, and Gloria. Private and his fellow penguins came to the three animals aid, and Alex showed up and clobbered the fossas and scared them away once again. After that, the fossas never bothered the lemurs, Alex, and his friends anymore.

Trivia

 * Fossa_real.gife their appearance in the film, in real-life, Fossa hunt alone, not in packs.
 * Fossa are called Foosa in the video game.
 * They apparently have a leader in the video game, who doesn't appear in the movie at all. He serves as the final boss and as a playable character in the shuffleboard minigame.