What IS an XL Bully? Government releases official definition amid warnings dog will be 'impossible to track' once ban comes into place because it is not a recognised breed

MailOnline looks at the key questions ahead of new rules coming into force on December 31 making it illegal to breed, sell, advertise, exchange, gift, rehome, abandon or allow XL Bully dogs to go stray.

No money would ever tempt me to kill my XL Bully': Furious dog owners blast government £200 'puppy scrappage scheme' to euthanise their pets - as charities face an impossible task to

XL Bully D-day looms: MPs warn 'ambiguity' over breed will leave police even more stretched over Christmas and expert warns of 'disaster' - as videos show officers and owners struggling to handle

XL Bully D-day looms: MPs warn 'ambiguity' over breed will leave police even more stretched over Christmas and expert warns of 'disaster' - as videos show officers and owners struggling to handle

Dramatic moment armed police shoot dead suspected XL Bully after rampage that injured two people

XL Bully D-day looms: MPs warn 'ambiguity' over breed will leave police even more stretched over Christmas and expert warns of 'disaster' - as videos show officers and owners struggling to handle

Mark Duell: All their latest coverage - Page 7

Mark Duell: All their latest coverage - Page 7

Moment two 'XL bullies' run loose on street, jump at woman's car and try to attack another pet dog before police seize the animals

Dozens of XL Bully owners gather on seafront to walk their dogs unmuzzled for the last time before new restrictions come into force TODAY

Dozens of XL Bully owners gather on seafront to walk their dogs unmuzzled for the last time before new restrictions come into force TODAY