Doona(2004)

Anne McCaffrey

For the first time in one volume—two complete novels set on the remarkable world of Doona, by two of the most acclaimed literary imaginations.  

More than twenty-five years ago, the first humans came to the unspoiled planet of Doona. They ignored one important They were not alone. Doona was the home of the catlike alien race of Hrrubans. And so began an experiment in cohabitation that lasted for a quarter of a century.
 
Their contract is now up for renewal.
 
Now, the wild planet they tamed, the home they fought for, and the delicate alliance they share could be destroyed forever as a new threat looms. The Gringgs are not the first alien visitors to the planet, but they are the first to offer friendship—and a proposal for a prosperous future. But not everyone trusts the new guests. Not everyone believes in their motives. And as a battle of diplomatic unrest ensues, Doona once again falls under the dark shadow of uncertainty—and self-destruction.
 
“An excellent read.”— Locus

“[McCaffrey and Nye] blend their skills effectively to produce a brisk, well-told…tale.  Fans of either author, or both, will have fun.”— Booklist