ABCEntities dc = new ABCEntities();



            var x = dc.ExecuteFunction<Perro>("ListarPerros", System.Data.Objects.MergeOption.PreserveChanges);
            var list = x.ToList();


            var cmd = dc.Connection.CreateCommand();
            cmd.CommandText = "select p,p.Perro from ABCEntities.Perrero as p";
            dc.Connection.Open();