The Nexu's are a species of large agile tiger-like species from the planet Cholganna.

Star Wars Episode II: Attack of the Clones

In Episode Two of Star Wars, a Nexu is one of the creatures used by the Geonosians along with the Acklay and the Reek  in the arena. The Nexu goes after Padme, who climbed to the top of the pole. She was chained to and let it come up were she kicked it down onto the ground, but not before it scratched her. Stunned, the Nexu is then trampelled to death by the Reek that was being controlled by Anakin Skywalker.