The Madrid giants twice took the lead in Gran Canaria, but were forced to settle for a point when Sergio Araujo scored in the latter stages of the La Liga clash.
"We're disappointed we did not win. We are still unbeaten in the league, but the important thing is to win three points," Bale told reporters. "We were unlucky with the chances we had, but now we play in Dortmund and we have to bounce back. We were unlucky, but that is football."
Real Madrid's next league match is at home to high-flying Eibar next weekend.