The three-month-old was rushed to hospital in the early hours of this morning but medics were unable to save her.
Police in Waterford, Ireland, dashed to the residential property after the disturbance.
The baby was understood to have been attacked by a dog, reports Cork Beo.
It is not yet known what breed.
A garda spokesman said: “Gardaí are investigating all the circumstances after a female infant, aged 3 months, was fatally injured by a dog at a residence in Clashmore, Co Waterford in the early hours of this morning, 7th June 2021.
“Gardaí and paramedics treated the infant at the scene until she was taken to Cork University Hospital. She was pronounced deceased a short time later.
“An Garda Síochána are appealing to the media and public to respect the privacy of the family at this time.”
On its website, RSPCA explains the Dangerous Dog Act is legislation which has made it illegal for a dog to be ‘out of control’ or to bite or attack someone.
The site reads: “The legislation also makes it an offence if a person is worried or afraid (the term is ‘reasonable apprehension’) that a dog may bite them. So it’s important to ensure that your dog is kept under control at all times and in all places.”
Since 1991 it has been illegal for dogs to be ‘out of control in a public place’. In 2014 the law was amended to include incidents on private property – so inside your home and others’ homes, including front and back gardens.