A felinx was an animal that could be kept as a pet. The Gavana Orbital space station resident Yrica Quell and her family once owned one, but Quell's parents were forced to put it down when it became sick. While governor of the planet Haidoral Prime, Everi Chalis concluded that felinx were becoming feral and had many killed. The governor later defected to the Rebel Alliance's 61st Mobile Infantry, and the 61st recruit Corbo attempted to confront her with a galley knife, as his felinx had been killed under her orders.
In 231 BBY, Supreme Chancellor Lina Soh of the Galactic Republic brought a number of Republic delegates and some Jedi on a tour at Lonisa City, the capital of the planet Valo, led by Coordinator Samera Ra-oon. When the party used some hoverbuggies during their tour, the sound of the vehicles reminded Jedi Master Stellan Gios of the gentle purring of a felinx.
By the Imperial Era, members of the felinx species were kept as pets. Yrica Quell, a resident on the Gavana Orbital space station, and her family once owned a female felinx, which eventually became sick. Quell's parents, sure that the animal was in pain, had the felinx put down as a result, though Quell refused to witness the creature's death. While Everi Chalis was governor of the planet Haidoral Prime, she believed that too many felinx in the planet's capital city, Haidoral Administrative Center One, were turning feral and harming the city's appearance. Consequently, she ordered a culling of the creatures, which resulted in the death of one owned by the civilian Corbo.
In 3 ABY, after the Rebel Alliance's 61st Mobile Infantry attacked Haidoral Prime, Corbo joined the company. Chalis additionally defected to the 61st in fear that the Empire would punish her for the company's attack. While the governor was held in a makeshift brig aboard the company's CR90 corvette, the Thunderstrike, Corbo attempted to confront her about his dead felinx, carrying a galley knife with him. His attempt to visit Chalis failed, and he explained the death of his felinx to First Sergeant Hazram Namir when questioned about his intentions.
In 5 ABY, Quell, who was a New Republic pilot at that time, mentioned her felinx's death in a conversation with the IT-O Interrogation Unit IT-O while the two were stranded on a planetoid in the Cerberon system. Quell remarked that she felt the same way about the felinx dying as she did about not admitting to her father that she had broken one of his plates on another occasion.
The felinx was first mentioned in the new Star Wars canon in the 2015 novel Battlefront: Twilight Company, written by Alexander Freed. In the Star Wars Legends continuity, the felinx first appeared in the 1998 novel The Mandalorian Armor, the first installment in The Bounty Hunter Wars trilogy written by K. W. Jeter.