A mum screamed "I'm dying" after her pet American bulldog "ripped her face off" as she tried to save her young daughters, a neighbour has revealed.
The three little girls were forced to watch as the vicious mutt ripped their mum's face to the bone during the horrific incident in their living room in Bilborough, Nottinghamshire.
The mum - said to be in her 40s - now needs extensive plastic surgery, reports say.
The canine also mauled the children's nan as she too tried to protect the kids from the crazed animal, and her legs and arms are said to have been broken.
The horrific ordeal was finally brought to an end when a member of the household stabbed the dog to death with a kitchen knife.
Neighbour Jade, who rushed to the family's aid after hearing screaming erupt from the nearby home, said there was "blood everywhere".
She told the Sun Online the attack was so severe that the mum's face wounds left her able to "see through to the bone".
The girls were in shock and hysterical following the incident, she added.
Jade and her partner first became concerned after hearing "so much screaming" she "thought someone was being killed".
It was her partner who darted through the street and into the family's home after midnight when they heard someone in the house cry out: "He's going to kill her."
At first they thought the kids were playing late in the garden, making a racket.
But as the screaming grew "louder and louder", and she heard someone telling a 999 operator, "She's going to die" - she told her boyfriend to go to the property.
Jade's boyfriend walked into a horrific scene, with blood spattered across the room, and bite marks up and down the elderly nan's legs and arms, which the neighbours thought were broken.
The mum was laying on the living-room floor and was "all teeth and flesh", Jade said, adding that her "face had been ripped off".
She added that the mum is in a "really bad way" and will "need lots of plastic surgery".
Jade said she has seen the dog, named Zeus, on previous occasions playing with the children in the garden.
However, an adult was always present to watch over the dog, which the family raised from a puppy.
Zeus was "well looked after" and had "free run" around the family home, she added, and he would bark if someone knocked on the door.
Detective Inspector Jon Kerry, of Nottinghamshire Police, told The Sun it was "devastating" how badly the mum was injured by "her own pet".
He warned dog owners "not to take any chances" around children.
It was fortunate that the incident was not worsened by a vicious attack on the three little girls, he said.
Police are making enquiries about how and why the harrowing incident happened.
“Although we don’t believe that the animal was a banned breed, this is a stark reminder to all pet owners not to take any chances with animals around children, particularly if they have ever displayed violent tendencies,” he said.
Just days ago a toddler was mauled by a huge Pitbull in front of horrified shoppers outside a supermarket in the West Midlands.
Shocked onlookers told how the boy ran past the dog towards his dad outside the Wolverhampton Sainsbury's store entrance when the animal suddenly leapt at him.
A supermarket worker who witnessed the attack claimed the dog belonged to a homeless man who often sat outside the entrance.
However the man told reporters at the scene his 11-month-old pet named Donnie had merely given the boy a "graze".
