Food habits of coyote (Canis latrans) on East Mesa, Cuyamaca Rancho State Park. San Diego County. Cahfomia were studied by analysis of scats. Remains of pocket gopher (Thomomys bottae). mule deer (Odocoileus hemionus), vole (Microtus californicus). ground squirrel (Spermophilus beecheyi), and white-footed mouse (Peromyscus spp.) were predominate in scats collected from November 1983 to July 1984. Five years earlier coyote on East Mesa were reported to feed primarily on beaver (Castor canadensis), white-footed mouse, opossum (Didelphis xirginiana). pocket gopher, mule deer, and badger (Taxidea taxus). Explanations are offered for the differences noted.