The number illegal dogs being seized by the authorities has increased in some parts of London.
In Newham, there has been a year on year rise in the number of pitbulls taken into kennels since 2009 with 81 seized in the last financial year.
Newham Council employee Tina Delaney cares for seized dogs until the outcome of court cases or they are claimed by their owners.
She said many of the owners are to blame for the temperament of the dogs but added that some can be aggressive towards humans and other animals.
Pitbulls are one of four types of dogs in the UK which are illegal to own, sell or breed.