In this study, the formation and distribution of the brachial plexus of the dog was investigated. For this purpose, ten dogs, in different ages and sex, were used.

The brachial plexus of the dog is formed by the ventral branches öf the sixth, seventh, eighth cervical and first, second thoracic nerves.

The ventral branch of the second thoracic nerve is relatively small.

The nerves arising from the brachial plexus of the dog:

Suprascapular nerve is formed by the ventral branches sixth and seventh cervical nerves in dogs.

Subscapular nerves usually number two in this study, it is determined that subscapular nerves, only one cases (10 %) are three in number, nine cases are two in number. When two subscapular nerves are present, one of them arises from the ventral branches of the sixth and seventh cervical nerves, the other originates from the ventral branch of the seventh cervical nerve.

Musculocutaneus nerve arises from the ventral branches of the seventh cervical nerve, with a delicate branch contribution from the sixth cervical nerve.

Axillary nerve takes its origin from the ventral branches of the seventh and eighth cervical nerves.

Cranial pectoral nerves are two in number. One of them, at its origin it is associated with the musculocutaneus nerve.

Caudal pectoral nerves are two in number. At its origin, they are associated with the lateral thoracic nerve, and arise from the ventral branches of the eighth cervical and first and second thoracic nerves.

Lateral thoracic nerve takes its origin from the ventral branches of the cervical and first and second thoracic nerve.

Thoracodorsal nerve is formed by the ventral branch of the eighth cervical nerve.

Long thoracic nerve originates from the ventral branches of the seventh and eighth cervical nerves.

Radial nerve is formed by the ventral branches of the eighth cervical and first and second, thoracic nerves. It is the largest nerve of the brachial plexus.

Median nerve takes its origin from the ventral branches of the eighth cervical and first and second thoracic nerves. At its origin it forms a single trunk with ulnar nerve.

Ulnar nerve takes its origin from the ventral branches of the eighth cervical and first and second .thoracic nerves.