popular in the past is in such decline now. one theory is that celebrities are driving a growing fashion for exotic breeds. it s been called the paris hilton effect. it might explain why there are now 25 times more young chihuahuas than there are english setters. and then there s the husky. siberian by name, by nature unsuitable for many british homes. the english setter might be the latest native breed to be declared vulnerable. but there are also more than 20 others. dogs that were once our best friends, now at risk of disappearing forever. mark worthington, bbc news, norfolk. strange. i m surprised people like those little rat-looking dogs so much. and if paris hilton has single-handedly led to the extinction of these dogs, that s even more embarrassing. that s me and my little my pet dog back at home. i don t know what i m doing