Attached are dangerous dogs that are banned under UK law and if you see anything looking similar, report it to your local Police station or via www.lancashire.police.uk or if not in local area, www.police.uk:
Japanese Tosa
The breed is thought to have first emerged after the 1850s when the Japanese Shikoku Inu was crossed with European dogs.
The aim was to create a bigger fighting dog.
In traditional Japanese dog fights tosas would "wrestle" each other and the fights followed similar rules to those of sumo wrestling.
Dogo Argentino
The breed was developed in Argentina after the 1920s from the now extinct Cordoba Fighting Dog and was intended to be a hunting dog.
They were specifically bred to avoid the aggression of Cordoba Fighting Dogs while hunting.
They are used today for tracking, search and rescue and general police work.
Fila Brasileiro
The Fila Brasileiro is thought to have been developed from a number of breeds, including the mastiff, the bulldog, and the bloodhound.
They were originally found on farms and plantations and were reportedly used to track Brazilian slaves and fugitives.
They are renowned for their aggression towards strangers.
Pit bull terrier
The breed was originally bred to take part in bull-baiting, a gambling "game" where they attacked bulls in pits.
When the practice was banned in 1835 they were then bred for dog-fighting.
They were bred to be aggressive with a high pain threshold, but they were not trained to be aggressive towards humans.
