The genetic mutation that gives the American Ringtail its distinctive tail gives rise to questions about structural differences. The American Ringtail breeder group is dedicated to researching and studying these structural differences, and to ensure that no harmful effects of the mutation are evident.
Spine and TailWhen manipulated manually, the American Ringtail spine feels very much like that of any other cat. The vertebrae are aligned normally and there are no bumps, twists or knots in the spinal column or tail. The tail has an extended range of motion, with the most pronounced flexibility being at the base of the tail. The tail base is quite a bit thicker and has a more pronounced musculature than non-ringtailed cats. When petted down the back and over the tail, this musculature can be felt in the greater resistance of the tail to fold down. 
On x-ray, the vertebrae are alligned and spaced normally, with no evidence of deformities such as the "butterfly" spilt that is seen in dog breeds with corkscrew tails (Pug, Akita). The 7 lumbar vertebrae are somewhat elongated, giving the appearance of a moderately long torso. Hips, Knees and Feet There has been no evidence to date of any hip dysplasia or malformation of the hip sockets or joint. Upon manipulation the shoulder, hip, knee, ankle and foot joints have a normal range of motion with no evidence of pain and are seated firmly in their sockets. All adults who have been x-rayed have shown normal hips, knees and feet joints.
The femurs of the male in the x-ray to the left are elongated, a desireable trait in many breeds (Max, JBT. etc) that raises the rear of the cat up. Although this is not related to the tail genetics, this trait is bred for in the American Ringtail as well. Continuing ResearchAs we progress in the American Ringtail breeding programs, we will continue to have our cats examined by orthopedic specialists to ensure that should there be any negative reprocussions from multiple generations of these genetics being bred together, they are found immediately. Should any such issues be found, we will immediately adjust our breeding plans to eliminate them, and if impossible to avoid, will cease the intentional development of this breed. It is our sincerest hope that this is never a choice we have to make, and that our cats continue to be as vibrant, healthy and wonderful as they have been since 1998! Credits:The x-rays above are of Singaling on D Flipside, a two year old American Ringtail whole male. These images were taken 5/30/06 by a board certified veterinary orthopedic specialist, Dr. Nancy Hampel DVM, MS, DACVS at Animal Medical enter in El Cajon, CA. Flip is currently in the SIngaling Cattery breeding program in San Diego, CA. |
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