The longest and strongest tendon in a dog which is easily discernible in short-haired breeds; such as, the Greyhound and Whippet breeds.

The Achilles tendon forms an extension of the rearmost thigh muscle groups and anchors these muscles onto the fibular tarsal bone at the point of the hock or collection of bones of the hind leg forming the joint between the second thigh and the metatarsus or the collection of bones of the hind legs forming the joints.