Crufts is officially recognised as the world’s largest dog show by the Guinness Book of Records.

I am no expert in these matters so bow to your better knowledge and judgement.

However, theer are concerns that in order to win prizes and fame, breeders are going to "extremes" in inbreeding..

See attached link;

http://www.dailymail.co.uk/news/article-1046614/BBC-drop-Crufts-unhealth...