We won but against a bigger side we couldn't have won that type of game.
Pochettino felt that Son deserved a penalty and found it "unbelievable" that he was booked for diving instead.
Although the scoreline suggests an easy win for Mauricio Pochettino's men, who are in third place in the Premier League, five points behind Manchester City and Liverpool, Leicester looked unsafe and had 20 shots at goal.
The France worldwide kept out Jamie Vardy's penalty, which was the striker's first touch of the game, and made a number of other important stops as Spurs won 3-1 at Wembley.
Vardy had scored his previous seven penalties and would later reduce the arrears, but Spurs would seal the win through Heung-Min Son in stoppage time.
"I am a person that always accepts the mistake, but I think it was so unusual the situation today".
Jamie Vardy stepped off the bench to take Leicester's penalty against Tottenham - but his first touch did not go as planned.
Venezuela sanctions leave oil market short of heavy crude
World oil demand will grow more slowly this year, OPEC said, and non-OPEC production will rise more rapidly than expected. In a monthly report, OPEC said its oil output fell nearly 800,000 barrels per day in January to 30.81 million bpd.
At Wembley, Mauricio Pochettino saluted Tottenham's fighting spirit as they kept alive their bid to gate-crash the Premier League title race with their 3-1 victory over Leicester.
"I think we are talking about one of the best 'keepers in the world, with a lot of experience and having played a lot of games here at Tottenham", Pochettino told his post-match press conference.
"Dortmund play fantastic football with fantastic players and I'm not surprised they're top of the league in Germany", said Lloris to reporters. But sometimes you deserve to win, like the game against Man United, and you lose.
Lloris also warned Spurs must produce a better performance against Dortmund after Leicester had twenty shots on goal.
The Kiwi bagged a brace in a key game against Brighton on Saturday, taking his tally to five goals in seven games in what a vital win for the Clarets against the Seagulls, who both now sit on 27 points, three points above the drop zone, with Burnley now unbeaten in their last seven.
Puel said: "I gave him the opportunity to take the penalty".
"We need to obviously improve the team performance and we need the stadium full and ready to push and to help us. Come on. We are the most innocent people on the pitch".