The tragedy was in a field in St Fagans, on the outskirts of Cardiff
A woman was trampled to death by cows when she tried to rescue her dog which ran into the herd, an inquest was told.
Anita Hinchey, 63, was walking her dog with a friend through a field owned by the Earl of Plymouth estate in Cardiff when her pet ran off.
Mrs Hinchey, of St Georges-super-Ely, Vale of Glamorgan, walked into the cows to find her pet but was trapped and trampled on, the Cardiff inquest heard.
She died of multiple injuries. The inquest was adjourned to a later date.
Mrs Hinchey and a friend had both been walking their dogs in the field in St Fagans, which neighbours the National History Museum, on Saturday.
The field, which runs alongside the southbound carriageway of the A4232, does not have a designated footpath, the coroner was told.
Det Con Rya Cowan told the inquest: "Her friend became very nervous and put her dog on the lead.
"Mrs Hinchey did not and, as she attempted to retrieve her dog, she was trapped amongst the cows."
The inquest heard that Ms Hinchey was among the herd when she slipped and was trampled.
The emergency services were alerted to the incident at 1619 BST.
Det Con Cowan said paramedic Robert John was first at the scene and he pronounced Ms Hinchey dead.
Her body was later formally identified by her daughter, Kim Beard.
South Wales Police are investigating the incident but earlier this week said there were no suspicious circumstances.
"This appears to be a tragic accident," said Ch Insp Alun Morgan.
"Our thoughts are with the lady's family, who have been informed."
The Health and Safety Executive has interviewed the farmer who owns the cattle. In June, 49-year-old vet Liz Crowsley was trampled to death by a herd of cattle while walking the Pennine Way with her two dogs.
Two weeks earlier, former home secretary David Blunkett was left with a black eye and a cracked rib after being charged by a cow while on a walking holiday with his guide dog in the Peak District.
In both cases, the cows are thought to have been trying to drive off the dogs in order to protect calves.
Health and Safety Executive figures show that such attacks are rare. Excluding the recent deaths, 18 people have been killed and 481 injured by cows in the past eight years.