London ? The BBC will not televise Britain’s biggest dog show for the first time in more than 40 years after a controversy about canine inbreeding.

The broadcaster said Friday it had suspended coverage of the 2009 Crufts show “pending further investigations into the health and well-being of pedigree dogs in the U.K.”

Show organizers accused the BBC of making “unreasonable demands” that it exclude certain breeds of dog from the show.

The Kennel Club, the show’s organizer, and the BBC have been at odd since September when the broadcaster aired a documentary claiming decades of inbreeding had led to serious health problems in some pedigree dogs.