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Dogs In Motion
A new study of canine locomotion
A Chihuahua pacing.

Many studies of locomotion in dogs focus on sick dogs while others focus on particular aspects of locomotion. The recently published book Dogs In Motion includes the comprehensive findings of a study of more than 300 dogs and how they move. More than 30 breeds were studied with several techniques helping reveal how dogs move.

Researchers Dr. Martin Fischer and Dr. Karin Lilje used high-speed x-rays as well as infrared imaging based on reflective dots positioned on the dogs to record details of their movements from both the side and from the front. Interestingly, researchers found that no matter what breed of dog was looked at, the patterns of movements match. Though the gaits of many breeds may appear quite different, the underlying motions of bones, muscles and connective tissue are not so different after all.

The study shows that displays and textbooks sometimes have errors, particularly related to the heights of corresponding parts of the front and hind limbs. The shoulder blade and hip are often depicted at the same level, when the true placement of these joints is actually different. The thigh and the shoulder blade correspond, as do the upper arm and the lower leg. According to Fischer, the shoulder blade and forearm are moving in matched motion with the thigh and middle foot, even though that is different than what was previously thought.

Previous investigations into the ways dogs move, such as Rachel Page Elliot’s Dogsteps, have changed what people thought they knew about canine locomotion, and this most recent study is one more scientific study that does so.

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Karen B. London, PhD, is a Bark columnist and a Certified Applied Animal Behaviorist specializing in the evaluation and treatment of serious behavior problems in the domestic dog.

Photo by Martin Fischer.

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