Bedlington Terrier owners in the UK reported that the most common health issues among living dogs were reproductive, heart murmur, and eye problems such as epiphora, retinal dysplasia, and cataracts. Bedlingtons seem to be more prone to these eye diseases than other breeds. They also have a high incidence of kidney problems. Copper toxicosis occurred among about 5% of living dogs. Inbreeding is a concern, as some dogs ' been bred in and in to a damaging extent.' Reputable breeders will conduct DNA testing of all litters and will not allow pups which carry the copper toxicosis gene to be bred, a practice which has significantly reduced the incidence of this disease in the breed. Excepting these problems, Bedlingtons are generally a very healthy breed.