This video can not be played
An 11-year-old girl and two men were injured in the attack in Birmingham on Saturday
Home Secretary Suella Braverman is seeking "urgent advice" on banning "lethal" American bully XL dogs.
Her statement comes after footage was posted online of an attack on an 11-year-old girl in Bordesley Green, Birmingham, on Saturday.
Ana Paun, who said she was "terrified" and "screaming for help during the ordeal", called for a ban on the breed.
But some, including leading animal groups, argue that a breed specific ban is not the solution.
Ana's mother told the BBC her daughter spent a night in hospital and that she "thanked God" she was alive.
Two men who intervened were also bitten and treated in hospital. The crossbreed XL bully-Staffordshire bull terrier dog is being held in secure kennels and the owner has been spoken to by police.
Ms Braverman wrote on social media: "This is appalling. The American XL bully is a clear and lethal danger to our communities, particularly to children.
"We can't go on like this. I have commissioned urgent advice on banning them."
The prime minister's spokesman described the Birmingham footage as "shocking", said the government took the issue "extremely seriously" and added that the law on dangerous dogs had been "toughened" in 2020.
The attack raised questions from victims about why the breed – which has already killed in the UK – had not been banned already.
But the Dog Control Coalition, a group including RSPCA, Battersea Dogs Home and the Royal Kennel Club, says banning specific breeds is not the solution – pointing to "irresponsible breeding, rearing and ownership".
Emma Whitfield, whose 10-year-old son Jack Lis was mauled to death in Caerphilly, Wales, in 2021, questioned why it had "taken this video and not a child's life to do something?"
"The government could have responded a lot sooner, I was in Parliament in March of this year speaking to MPs about why there should be changes in the law, they weren't interested then," she said.
"These dogs aren't cared for by the breeders, they just want money, so from the greed at the start, irresponsible ownership in the middle, we've got children dying."
The American bully XL is not subject to any legal restrictions in the UK but advice on a ban was commissioned last week, an adviser said.
Adding dogs to the banned list is the responsibility of the Department for Environment, Food & Rural Affairs (Defra), and it is illegal to own, breed or sell dogs on that list.
But Barry Gardiner, Labour MP and member of the Common's Environment, Food and Rural Affairs (EFRA), told BBC News he did not think it was right to ban the breed, saying it was about controlling owners.
His view is mirrored by the Dog Control Coalition, which argues that the Dangerous Dogs Act – which has focused on banning specific types – has coincided with a "a troubling increase in dog bites and fatalities".
A spokesperson said: "Sadly, the increased popularity of American XL bullies has made them valuable commodities, resulting in irresponsible breeding, rearing and ownership, which can all contribute to an increased likelihood of aggression in dogs, regardless of breed."
The coalition said the government should focus on the improvement and enforcement of current breeding and dog control regulations, and on promoting responsible dog ownership and training.
The American bully XL is the largest variation of the American bully breed, a type of bulldog developed by breeding several dogs including the American Pit Bull Terrier, American Bulldog and English Bulldog.
The PA news agency reported that there were concerns over the feasibility of adding the American bully XL to the banned list.
The dog is not recognised as a specific breed by the Royal Kennel Club, the UK's largest organisation for breeding and welfare.
However, they are responsible for a string of attacks in the UK.
Dog behaviourist Stan Rawlinson told the BBC that the breed was "a whole different ball game", describing it as "probably the most dangerous dog breed" he had ever seen.
"It's hyper-reactive. It has an enhanced prey drive and a reactivity that is totally off the scale," he said.
"They hurt my husband's arm and crushed my dog. What sort of dog should be roaming the streets like that? If was a child it would be dead. I hate them. They ruined our lives" – Pam, from Doncaster and whose dog was attacked by two American bullies, told BBC Radio 5 Live
"I took my dog and my baby on a walk and this dog just got out and went for me. My dog got away so it went for me again. I was really lucky because I got saved by a lorry driver. If it wasn't for him I would probably be in a very, very different condition" – Katie, from Doncaster, who was injured by a bully XL three weeks ago, told 5 Live
"She's just the sloppiest, dopiest dog I've ever owned. She's great with other people, her only downside is she gets excited when she sees people" – Charlotte Towner told BBC Radio 1's Newsbeat
"I'm not bothered by children running around near him because I have trained him very well. They are so loving. They are known as a family dog" – American bully owner Mollie told Newsbeat
A Defra spokesman said: "We take dog attacks and anti-social behaviour very seriously and are making sure the full force of the law is being applied.
"This can range from lower-level Community Protection Notices – which require dog owners to take appropriate action to address behaviour – to more serious offences under the Dangerous Dogs Act, where people can be put in prison for up to 14 years, be disqualified from ownership or result in dangerous dogs being euthanised."
Additional reporting by Doug Faulkner
Are you in favour of a ban on the breed? Or are you an American bully XL owner? Share your experiences by emailing firstname.lastname@example.org.
Please include a contact number if you are willing to speak to a BBC journalist. You can also get in touch in the following ways:
If you are reading this page and can't see the form you will need to visit the mobile version of the BBC website to submit your question or comment or you can email us at HaveYourSay@bbc.co.uk. Please include your name, age and location with any submission.
Dog attack victim, 11, wants bully XL breed banned
What is an American bully XL and should they be banned?
Dog attack girl's mother is thankful she is alive
Mum of boy killed by bully XL criticises Braverman
Two men and girl, 11, injured in dog attack
Police chiefs' concern over American Bully XL dogs
Inside the world of organised crime and extreme dog breeding
Dog in fatal attack was legal 'American Bully XL'
Calls for support as 5,300 dead in Libya floods
Anger in Spain after man appears to grope reporter
Dog catches crawling Pennsylvania prison fugitive
Frank begged for help but died in UK detention centre
Families of Syria's disappeared duped by fraudsters
Why the Libyan port floods were so catastrophic
Shoes to TVs – looting spree ravages war-hit Sudan
Why the FBI is still searching for hundreds of Capitol rioters
Gabon coup leader hailed as a Moses-like figure
Flood-hit Libyan city living through 'doomsday'
A 'beach towel revolt' sweeping Greece
Young Moroccans answer social media calls for help
Florida's first hurricane-proof town
The greatest spy novel ever written?
Why is everyone crazy about Aperol?
© 2023 BBC. The BBC is not responsible for the content of external sites. Read about our approach to external linking.
This video can not be played