The 41-year-old woman and three dogs have been killed in a car crash in west London, the Metropolitan Police said.
The driver of the car – a 26-year-old man – has been arrested on suspicion of causing death by dangerous driving and taken into custody.
Officers were called to Cheyne Walk in Chelsea just before 6.30am on Saturday to reports of a collision involving a pedestrian, animals and an Audi.
The woman was found dead at the scene, while all three Golden Retrievers also died as a result of injuries, according to police.
The driver was found with minor injuries.
A staff member from a nearby restaurant, who wished to remain anonymous, said: “When I got to work this morning I noticed the police cordons and later found out there had been a car crash with fatalities.
“It is unusual for this to happen in Cheyene Walk– a large chunk of the area has been closed off from Battersea to the Royal Hospital Road.”
A number of people paid tribute to the woman on social media following the tragic incident.
One man wrote: “Thoughts and deepest sympathies are with her family. The last thing you’d expect to happen when out walking your dogs.”
Another person added: “Poor lady got up early to walk her dogs not knowing it would be her last. Heart breaking RIP.”
A photo on the London 999 Twitter account shows the junction where Albert Bridge meets the Chelsea embankment cordoned off and a blue forensic tent pitched on the debris-strewn road.
A forensic tent has been pitched on Cheyne Walk, a mansion-lined road that stretches along the Thames and has long drawn famous residents such as rock star Sir Mick Jagger.
Motorists are advised to avoid the area due to road closures.
The woman’s next of kin have been informed, police said.
A section of the embankment between Battersea Bridge and Royal Hospital Road and Albert Bridge are shut, according to the Transport for London traffic website.
They are appealing for witnesses or anyone with dash cam footage to call 101 quoting CAD 1500/14May.