Some critics state that conformation shows lead to the selection of breeding dogs based solely upon appearance, which is seen by some as detrimental to working qualities and, at worst, as a promotion of
eugenics. The shows have been criticized for encouraging breeding of traits that are harmful to the dogs; for example, the
Pekingese dog who won at Britain's most prestigious dog show in 2003 had to be photographed while lying on an icepack after winning the show because the dog could not breathe well enough to efficiently cool his own overheated body. Breeding selective traits reduces
genetic diversity, which can create some health problems in dogs. as they thought that the introduction of their breeds to the show ring would lead to decreasing numbers of working dogs with adequate qualities. In August 2008,
BBC1 televised a documentary film titled
Pedigree Dogs Exposed, which investigated the subject of health issues affecting pedigree dogs in the United Kingdom, with a particular emphasis on dogs bred for showing. The programme provoked criticisms of kennel clubs. Following the broadcast, the BBC withdrew its television coverage of the
Crufts dog show from 2009, with other sponsors and partners also withdrawing support, including
Pedigree Petfoods, the
RSPCA,
PDSA and the
Dog's Trust. In response to the programme, the Kennel Club in the UK announced a review of all breed standards. They stated that they will impose a ban on breeding between dogs that are
closely related and will impose greater monitoring to prevent unhealthy dogs from being entered. ==Bench show==