It has been populated solely by dogs for many generations. The canines have become intelligent, communicating in their own dog language; they have instituted their own government and laws. They have also built a large city, with many conveniences and comforts. They are guided by a troop of dog fairies.
The Kaynyn Island dogs have also solved the moral problem of predation. The island is rich with dogberry trees and chugu nut bushes; the chugu nuts have become the dogs' favorite food. ("The Pea-Green Poodle")