Bayern Munich suffered a jolt to their title defence, losing their first league game of the season 5-1 in Frankfurt and handing Bayer Leverkusen the chance to open a six-point lead at the top of the Bundesliga.
Saturday's Bundesliga clash between Bayern Munich and Union Berlin has been postponed due to heavy snowfall in Munich, Bayern said in a statement.
Copenhagen ground out a 0-0 draw at Bayern Munich in their Champions League Group A match on Wednesday to snap their opponents' 17-game winning run in group-stage matches and stay in contention to reach the last 16.
Kane is also the first English player to score 18 times in one season in the Bundesliga.
Bayern Munich coach Thomas Tuchel on Thursday hit out at the crowded fixture list, saying it was "not for the good of the game and not for the good of the players".
Bayern Munich striker Harry Kane said Robert Lewandowski's league goals record was "still a bit too far away" despite again scoring a brace in a 4-2 win over Heidenheim on Saturday.
Real Madrid, Bayern Munich, Inter Milan and Real Sociedad all qualified for the last 16 of the Champions League with two group games to spare on Wednesday.
With the scores locked at 1-1 and the match looking destined for extra time, defender Gaus netted in the sixth minute of injury time to grab his team a famous victory.
Bayern Munich striker Harry Kane joked that he would have to keep the match ball in his hotel room after scoring a Bundesliga hat-trick against Darmstadt on Saturday, as he is still yet to find a house in Munich.