Lewis Hamilton said he is worried about the "extinction of our race" if humans kept eating animals. However, he later took down the social media post.
Mercedes team principal Toto Wolff dedicated his team's historic sixth consecutive world championship double to Formula One legend Niki Lauda, who died earlier this year.
Mercedes clinched a record sixth successive constructors' world championship with their double podium finish.
Japanese Grand Prix: Sebastian Vettel clocked a brilliant 1min 27.064sec, almost two-tenths of a second quicker then Charles Leclerc after qualifying was postponed from Saturday.
If Japanese Grand Prix qualifying is not possible on Sunday morning because of continuing bad weather, then the grid will be decided based on Friday's second free practice times.
Sebastian Vettel disobeyed team orders in Russia and Charles Leclerc seemed to have a further dig at his teammate before trying, cryptically, to wriggle out of it.
Ferrari have developed the fastest car but it is Mercedes and Lewis Hamilton who are heading for the titles again.
Lewis Hamilton claimed his first win in four races on Sunday when he rode his luck to end Ferrari's winning streak with a well-judged strategic victory.
Lewis Hamilton pulled out a dazzling final sector and final lap to take second ahead of Sebastian Vettel in the other Ferrari by a narrow margin.
Max Verstappen clocked a best lap in one minute and 33.162 seconds to outpace Charles Leclerc by 0.335 seconds on a cool and dry afternoon.
Charles Leclerc started on pole last weekend but lost the lead to Sebastian Vettel thanks to a decision to use a tactical 'under-cut'.
Sebastian Vettel mastered a hazy circuit to claim a record fifth triumph in the Singapore Grand Prix.
Charles Leclerc secured pole position for the Singapore Grand Prix on Saturday as he looks to claim a stunning hat-trick of wins.
Michael Schumacher will receive stem cells to obtain an anti-inflammatory effect throughout his system, French daily Le Parisien suggests.
A downhearted Sebastian Vettel maintained he still loves his job as a racing driver despite enduring another day of crushing humiliation.
Sebastian Vettel endured a torrid and disappointing day, finishing 13th after spinning off and taking a penalty for rejoining in a dangerous fashion.
Alex Peroni's car revolved and somersaulted in the accident before landing upside down high up against the barriers.