It is Bohusläningen that reports on the case.
The woman and the man are said to have tricked the victim away from his workplace and forced him into a car where he was beaten.
The accused are said to have forced the victim to tell where his dog was and then stolen the dog.
They both deny the crime, but the 27-year-old admits that he has dealt blows to plaintiffs who he believes were in self-defense.
The 18-year-old admits that she picked up the dog, but says that it was out of care for the animal that she meant too badly.
The 27-year-old is also charged with assault in court as he allegedly tried to prevent the victim from contacting the police.
The cause of the incident is believed to be an unpaid debt.