Kif Strike Back — C.J. Cherryh

Chanur's Revenge.
Kif power. Hani Pride...

When the kif seized Hilfy and Tully, hani and human crew of the Pride of Chanur, they issued a challenge Pyanfar, captain of Pride, couldn't ignore, a challenge that was to take Pyanfar and her shipmates to Mkks station and into a deadly confrontation between kif, hani, mahendo'sat, and human. And what began as a simple rescue attempt soon blossomed into a dangerous game of insterstellar politics, where today's ally could become tomorrow's executioner, and where methane breathers became volatile wild cards playing for stakes no oxy breather could even begin to understand...