This specimen is either a California mule deer (Odocoileus hemionus califor

This specimen is either a California mule deer (Odocoileus hemionus californicus) or a Southern mule deer (Odocoileus hemionus fuliginatus)

From further research, it turns out that the Mule deer at Orange County Zoo are not California mule deer (Odocoileus hemionus californicus) nor Southern mule deer (Odocoileus hemionus fuliginatus), these animals are of the subspecies Odocoileus hemionus inyoensis (Inyo mule deer)