A woman had her arm mauled and broken during a second dog attack in the same city in just 24 hours.
Police were called at around 1.45pm to Keats Close in Lincoln after receiving reports that a 38-year-old woman had been bitten by a dog.
It came just a day after a 22-year-old woman, named by sources as Joanne McCord, suffered serious injuries to her scalp after being attacked nearby by an an American pitbull.
Police said that during the second incident the victim suffered bites and a suspected broken arm inflicted by what is believed to have been a Staffordshire bull terrier.
The injured woman is thought to have intervened in a fight between two dogs before the attack.
A Lincolnshire Police spokesman said: "Armed police officers attended the address and humanely destroyed the dog with the consent of the owner.
"Two other dogs in the vicinity have been taken into the care of the Lincoln City Council dog warden for their own welfare pending the identification of their owners."
The second incident took place at the same address where a man was arrested earlier in the day in relation to the first attack.
Police said the 33-year-old male was being questioned in police custody, and added that he was not a resident of Keats Close.
Ms McCord, who was attacked near a quarry on Outer Circle Road, was said to be out of surgery and recovering at Lincoln County Hospital.
Police caught the animal which attacked her at 1.30am after launching a hunt using armed officers and a helicopter.
A spokesman confirmed that the victim was not the dog's owner and that t he animal was later taken to police kennels.
Staff at Lincoln County Hospital had raised the alarm at around 10.30pm last night after Mc McCord was admitted with her injuries.
The two attacks are the latest in a string of incidents involving dogs in recent times.
Last month 11-month-old Ava Jayne Marie Corless was mauled to death by a dog believed to be an American pitbull while in bed at a house in Emily Street, Blackburn, Lancashire.
An Alaskan Malamute and a collie-cross were destroyed following the death of a six-day-old girl in Pontyberem, Carmarthenshire, West Wales. The cause of Eliza-Mae Mullane's death on February 18 is not yet known
In November last year, four-year-old Lexi Branson was mauled to death by a pet dog despite her mother's desperate attempts to halt the attack. Lexi was attacked at a flat in Mountsorrel, Leicestershire. The dog had been a stray until a couple of months earlier.
In June 2013, a five-year-old boy was taken to hospital in a serious condition after being mauled by a dog in Co Antrim, Northern Ireland.
It was later confirmed that the dog was being shown to schoolchildren as a last-day-of-term treat.
Clifford Clarke, 79, was killed in a dog attack in his garden in Liverpool last May.
The retired hospital porter suffered fatal injuries after being mauled by a bull mastiff-cross which was reported to have found a way into Mr Clarke's garden from a neighbouring house.
The dog was shot dead by armed officers and two women from the area, aged 27 and 28, were arrested and bailed on suspicion of manslaughter.
Two months earlier, Jade Anderson, 14, was mauled to death by four dogs while visiting her friend near Wigan.
The girl was discovered by armed police at a friend's house in Chaucer Grove, Atherton, amid a pack of aggressive dogs.
The owner of the animals, mother-of-one Beverley Concannon, 45, was given a suspended 16-week sentence at Wigan Magistrates' Court for animal cruelty.