Lyran

The Lyrans are a sentient, bipedal, felinoid species who share many characteristics with the Kzinti and Caitians. They formed a space faring government known as the Lyran Star Empire.

They are naturally aggressive and prone to internecine strife which affects their ability to expand. They were known to be allies of the Klingon Empire and the two aided each other numerous times.

Hydran scientists believed that there was genetic evidence to suggest that the Lyrans and the Kzinti were related, something that greatly insulted both races and even sparked a war between the Hydran Kingdom and Lyran Star Empire.

(Star Trek games: Starfleet Command)