The one-year-old wolf sank its teeth into the woman’s cardigan before dragging her to the ground and biting her in the arm.
“I was terrified,” the woman told newspaper Aftonbladet.
The woman was treated by the park’s veterinarian after fleeing the wolf enclosure with the rest of the group. She was later taken to hospital.
According to the Norrköping park, the young wolf’s behaviour was a means of seeking contact and was not intended as an expression of aggression.
Visitors to the park are not normally allowed to enter the wolf enclosure.