The mother and daughter, 9, suffered from deep bite wounds after the dog ran over without a lead.
Police arrived at 5.44pm on Easter Sunday to find the son, 10, had also been bitten on the arm. The children’s dad was also in the park but was left unharmed.
London Ambulance Service treated the mum and two kids before they were taken to hospital. Officers from the Metropolitan Police are looking to speak to three men who allegedly ran towards Vicarage Road, near Hampton Wick Station.
The person thought to own the dog is described as a light-skinned black male with a moustache and hair on his chin. He wore a yellow and black top with black trousers.
Teach your dog to file his or her own nails by attaching sandpaper to a piece of wood.
Anyone with information is encouraged to get in touch with police.
Get in touch with our news team by emailing us at [email protected]
For more stories like this, check our news page .
Sign Up for News Updates
Get your need-to-know latest news, feel-good stories, analysis and more
Not convinced? Find out more »