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When we look at the anatomy of the human shoulder, we notice that it is composed of three main bones: the collarbone (clavicle), the shoulder blade (scapula) and the upper arm bone (humerus).

It is courtesy of these three bones and their associated muscles, ligaments and tendons, that we are able to lift, push, pull and swing our arms.

Along with a dog’s spine which is capable of bending and stretching with every stride withthe powerful hind legs providing forward propulsion, the dog’s shoulders are designed to increase stride length.

A dog's shoulders are therefore different anatomically compared to human shoulders as they are not supported by anything other than muscle and ligaments.

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For this reason, a dog's shoulders are sometimes referred to as "floating shoulders."

Dogs, unlike humans, do not have a collar bone. Absence of the collar bone allows dogs to have greater stride length for running and jumping.

However, no body part really floats alone as a particle suspended in space! 

While the dog’s scapula is not attached to any bones at the top, there are several muscular and ligamentous attachments.

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