The Knights had a chance to send it to golden point after the sideline kick when Reynolds was penalised for pushing Chanel Mata'utia off the ball from the kickoff. But Lamb's kick was far too low and sailed well to the left of the uprights.
After the Bulldogs carried an 8-6 lead into halftime, Trent Hodkinson evened up the scores nine minutes after the break with a penalty goal.
It appeared Hodkinson was set to come back to haunt his former club after he set up Chanel and Peter Mata'utia in the space of eight minutes to take a surprise lead.
However, the Bulldogs, despite being without five of their biggest names in Josh Jackson, David Klemmer, James Graham, Brett Morris and Greg Eastwood, found enough to break a two-game losing streak.
The Bulldogs climb to 13th, while the Knights remain last.