Final answer:
The epidural needle is typically placed between the fourth and fifth lumbar vertebrae (L4-L5) for a great dane undergoing a tail amputation procedure. This allows for effective local anesthesia.
Step-by-step explanation:
In a great dane undergoing a tail amputation procedure the epidural needle is typically placed between the fourth and fifth lumbar vertebrae (L4-L5). The epidural space, which is located just outside the protective covering of the spinal cord is accessed through these vertebrae. The L4-L5 level is chosen because the spinal nerves that supply the tail region exit the spinal cord at this level.
By delivering medication directly into the epidural space at this site local anesthesia can be achieved for the tail amputation procedure reducing pain and discomfort for the great dane during and after the surgery.