Tailhead

Tailhead is a term used in veterinary anatomy to describe the region at the base of the tail where the tail attaches to the body. It corresponds to the proximal end of the tail and includes the skin, connective tissues, and the bony coccygeal (tail) vertebrae that form the tail’s root. The tailhead marks the boundary between the trunk and the tail and is a recognizable external landmark in many species.

The exact anatomy of the tailhead varies by species, but it generally encompasses the proximal tail vertebrae and surrounding soft tissues. Muscles that move or support the tail originate near this region, and nerves and blood vessels run through the tissues at the tail’s base. In larger mammals such as horses and cattle, the tailhead is a relatively prominent, palpable area.

Clinical relevance and care: The tailhead can be a site for trauma, dermatitis, or other conditions that affect the base of the tail. Injuries may result from entanglement, fencing, or friction from equipment, and dermatitis can arise from flies, moisture, or poor hygiene. Regular grooming and keeping the base of the tail clean help reduce irritation. In cases of swelling, pain, or discharge at the tailhead, a veterinary examination is indicated to assess for infection, injury, or underlying musculoskeletal issues.

See also: Coccyx, Tail (anatomy).