Battersea Dogs & Cats Home's biggest event of the year is taking place today at Battersea Park from 11am to 4.30pm.
The Annual Reunion will be the largest gathering of rescue dogs in the country.
Hundreds of Battersea's former residents will be there to celebrate.
More top news
The Hollywood star took residents in Merton by surprise when he touched down in a helicopter near Poplar Road.
His shock decision to pull out of the Tory leadership contest came at the end of a speech where he appeared to set out his credentials.
The two newborn Sumatran tigers who are yet to open their eyes were born at London Zoo on Monday.