Cover art
Boyett, Steven R. The Architect of Sleep. Ace 1986.

Boyett, Steven R. The Architect of Sleep
What if: Intelligent life evolved from raccoons rather than primates.
Summary: A human spelunker exits a Florida cave to find himself on an Earth populated by oversized raccoons. There he is drawn into a fight for control of a kingdom where Georgia should be.
Comments: The book ends mid-story, but due to disagreement between Boyett and his publisher, an expected sequel entitled The Geography of Dreams was never published.
Published: Ace 1986 (0441029051w88 android).