Orchard Kennels and Cattery, in Barrow-upon-Soar, has confirmed the family of Lexi Branson got the dog that attacked and killed the four-year-old from them.
A spokesman, who did not want to be named, said he could not comment any further while the police investigation was ongoing.
Leicestershire police earlier confirmed that the dog is not believed to be listed as a dangerous breed and that investigations into the incident are ongoing.
The family of four-year-old Lexi Branson, who was mauled to death by a pet dog, today said "she will be our shining star in the sky and she we will never be forgotten".
In a statement, Ms Hudson and Lexi's grandmother Kerry Hudson said: "There's been a tragedy in the family. Lexi was a bubbly, bright little girl. She fought for her life from the moment she was born as she was born 3 months prematurely. She's been taken from us so tragically.
"She will be sadly missed, she will be our shining star in the sky and she we will never be forgotten."
The four-year-old died at Nottingham's Queen's Medical Centre on Tuesday after being attacked at a flat in Mountsorrel, Leicestershire.
The mother of the four-year-old killed by a family dog had to "use a knife" to release the dog's jaws, a family friend has said.
"Apparently it suddenly turned on Lexi for no reason. She was in bed sleeping with her mum and it came in and just went mental. It grabbed Lexi and wouldn't let go." Mr Ryan told the Daily Mirror.
"Jodi was screaming and trying to pull its head away but it wouldn't give in. In the end she had to use a knife to release its jaw. It must have been absolutely terrifying."
Mr Ryan recalled how he saw Lexi's mother, Jodi Hudson, in "hysterics" as her daughter was taken to hospital where she later died.
"She was in hysterics and kept saying she was told that the dog was safe around kids. She's devastated. Lexi was her only child and she doted on her."
Leicestershire police has confirmed the name of the four-year-old girl killed by a family dog as Lexi Branson, and revealed that the dog is not believed to be listed as a dangerous dog breed.
A police spokesman said:
Investigations are continuing into the circumstances that led to a four-year-old girl being attacked and killed by the family dog.
Leicestershire Police is able to confirm, on behalf of the Coroner, that the girl's name is Lexi Branson.
Tests are being carried out today to establish the exact breed of the dog but at this stage it is not believed to be a breed listed under Section 1 of the Dangerous Dogs Act.
Parents and adults cannot "just rely on the Government" to prevent all future dangerous dog attacks and need to become more aware of the dangers that come with owning one, said a pet safety campaigner.
Angela McGlynn lost her four-year-old son John Paul Massey in 2009 when his uncle's dog attacked him.
She told Daybreak the wanted to see all dogs to be muzzled around children under the age of 12, and said the Government "were putting some steps were being put in place".
A friend of the family whose dog attacked and killed their four-year-old daughter Lexi said they had the dog for only two months after picking it up from a local rescue centre.
Paul Ryan said that Lexi's mother Jodi Hudson said that she had been told the dog was safe around children, the Daily Mirror reported.
Lexi, described by family friends as a "happy and sweet" girl, died at Nottingham's Queen's Medical Centre yesterday after being attacked at a flat in Mountsorrel, Leicestershire.
A neighbour of the family whose dog attacked and killed their four-year-old daughter said the dog had previously been no trouble and she had recently been stroking the pet after seeing it out with the child' mother.
– Neighbour Glennis Goddard
Something must have snapped him.
I was stood talking to Jodi down across the lane and she was saying 'he's a lovely dog, I love him' and he let me stroke him.
I can't understand why he went off like that.
A young girl who died after she was attacked by her family's pet dog has been named locally as Lexi Branson.
Neighbours say the four-year-old was always friendly and lived in the flat in Mountsorrel with her mother Jodi Hudson.
Police are speaking to residents of a block of flats in Leicestershire after a child was attacked by dog and died later in hospital. Leicestershire Police confirmed that the dog died soon after the attack and say their investigation is still at an early stage.
Neighbours in Mountsorrel, Leicestershire where a little girl died after she was attacked by her family dog, have spoken of their devastation following her death.
– Neighbour who lives in Rowena Court
We've seen all the activity today and I've just had a phone call from one of the neighbours to say she's died. I always say hello when I pass, and the little girl used to play outside - she used to say hello when she was playing. It is just such a shock, such a sad shock.
– Gloria Longmire , a secretary at Mountsorrel Methodist Church
It's a shock, it's just a shock. It's really shook me, that is dreadful. It's tragic, it is really tragic. I would say we do have a strong community here and people will be absolutely horrified, and its dreadful that it's a family pet.