Companion Animals

Prostatic Disease in Dogs: Welfare and Management

Understanding prostatic hyperplasia, prostatitis, and cancer in dogs — welfare implications and treatment options.

Key Facts

Benign prostatic hyperplasia (BPH) affects the majority of intact male dogs over 5 years
Clinical signs include haematuria, haematospermia, straining to defecate, and perineal discomfort
Prostatitis (bacterial infection) causes acute severe systemic illness requiring urgent treatment
Prostatic carcinoma carries a poor prognosis and causes significant pain and urinary obstruction
Castration resolves BPH and reduces prostatitis risk — the primary preventive intervention

Welfare Considerations

Prostatic disease in dogs causes welfare impairment through pain, urinary dysfunction, and systemic illness. BPH causes perineal discomfort, difficulty defecating (prostatic enlargement impinges on the rectum), and haematuria. While BPH itself is benign, the discomfort of chronic prostatic enlargement is cumulative over months to years in intact males.

Bacterial prostatitis causes acute severe welfare impairment. Affected dogs present with fever, lethargy, pain on abdominal palpation, and straining. Without prompt antibiotic treatment, prostatic abscesses develop — serious welfare emergencies requiring surgical drainage. The systemic inflammatory response of acute prostatitis is debilitating.

Prostatic carcinoma causes the most severe welfare impairment. The tumour invades surrounding tissues, causes urinary obstruction, and metastasises to regional lymph nodes and lungs. Pain from local invasion and metastatic disease is progressive and severe. Palliative radiation therapy may provide temporary relief but the prognosis is grave.

What You Can Do

Castrate intact male dogs if breeding is not planned — prevents BPH and reduces prostatitis risk
Report any signs of straining, blood in urine, or perineal pain to your vet promptly
Seek emergency veterinary care for any intact male dog with fever and abdominal pain
Request rectal palpation and ultrasound for intact dogs showing signs of prostatic disease
Discuss palliative options with a veterinary oncologist if prostatic carcinoma is diagnosed