A new study published in the journal Canine Medicine and Genetics has found that most dog breeds are highly inbred, with an average inbreeding level of over 25 percent. These extremely high levels of inbreeding have been associated with the increased prevalence of a large variety of complex diseases and conditions. Dog breeds are often recognized by their distinctive traits, such as the wrinkled face of a pug, the spotted coat of a Dalmatian, or the short legs of a dachshund. Unfortunately, these traits are frequently the...