Head slap! Cats have long spines (tails are extensions of the spines) and do a lot of jumping, twisting, wrestling, etc., so...often get out of alignment! This can cause all kinds of pains and problems. I started taking my cats to see the good doctor, and found that maybe 80% or so had one or more vertebrae needing adjustment. Wow! We go on a regular basis now, and I'd urge everyone with cats or other animals to do the same. Any animal can benefit! Dr. Margaret serves newborns to horses, and I can't say how much I admire and appreciate her wisdom and work! Margaret Holiday: she visits several of the clinics in the San Francisco bay area. She's one of those folks with a very wide range of knowledge! Often she had been the most valuable member of a cat's medical team!