An unusually coloured puppy has defied odds of 0.001 per cent to be born into Guide Dogs’ breeding programmeRare Rainbow is the first chocolate Labrador to be seen by staff in more than four years, despite the charity being the world’s largest breeder of working dogs.
Just five out of 5,000 of the UK’s working guide dogs are this colour due to very few of Guide Dogs’ breeding Labradors carrying the recessive chocolate gene.