The Kennel Club is launching a campaign to encourage Londoners to be more responsible dog owners.
The charity hopes to promote the message that responsible dog ownership is an important aspect of every community, and to raise awareness of dog training, identification and fouling issues.
Adverts in telephone kiosks in some of London's open spaces will ask dog-walkers to be aware of the distress that badly trained dogs can cause to local residents.
The Club will also distribute leaflets, waste bags and posters to local authorities across the city.
"We hope this campaign will encourage dog owners to think about the importance of training and cleaning up after their dogs," said Caroline Kisko, secretary at the Kennel Club.