 According to statistics developed and maintained by the Orthopedic Foundation for Animals (OFA) since 1985, adult Boykin Spaniels have an alarmingly high incidence rate (> 30%) of hip dysplasia, although the rate is declining in the past 7 years due to the emphasis placed by the Boykin Spaniel Foundation.Canine hip dysplasia is considered by scientists to be both hereditary and acquired (due to diet, too strenuous exercise, and spay/neuter status.