Huddersfield manager Mark Robins warned his side could still be looking over their shoulders at the relegation zone after going seven matches without a win.
The Town chief was angry at his side’s failure to defend the corner from which substitute Joe Mason scored the only goal in stoppage time to snatch all three points as Bolton moved 12 points above the drop zone.
Robins said: “We did not defend a set play and that has cost us the point we had.
“The players have a responsibility to pick up their men and defend.
“You have to do your job but we didn’t do that, and it’s tough to take.
“We battered them in terms of possession but we haven’t seen the game through.
“Over the course of the season we haven’t picked up enough points and it’s the same old story. I am disappointed with the season so far after we made a bright start. We can’t afford to continue in the same vein or we’ll be looking over our shoulders.”
Danny Ward clipped the woodwork in the first half for Huddersfield before Chung-Yong Lee side-footed a shot against a post when he was unmarked in the area.
Oscar Gobern had a header cleared off the line for Town and it looked like Lee’s miss would prove costly. But deep into four minutes of stoppage time, Lee swung over a corner and Mason fired home into the bottom corner.
Bolton chief Dougie Freedman said: “We got the result that a spirited and committed performance deserved.”
Huddersfield Town: Smithies, Smith, Clarke, Gerrard, Hammill, Gobern (Holmes 76), Norwood, Clayton, Dixon, Wells, Ward. Unused substitutes: Woods, Hogg, Scannell, Bennett, Billing, Lynch.
Bolton Wanderers: Bogdan, Hutton, Knight, Wheater, Ream, Spearing, Medo, Danns, Trotter (Mason 71), Lee, Jutkiewicz (Beckford 83). Unused substitutes: Mills, Hall, Moritz, Baptiste, Lonergan.
Referee: J Simpson (Lancashire).
Man of the match: Chung-Yong Lee.