Dog Benign Prostatic Hyperplasia: Neutering and Medical Management

Benign prostatic hyperplasia is nearly universal in intact male dogs over five years. Castration or medical management restores comfort and prevents complications.

Key Facts

BPH affects over 80% of entire male dogs by 6 years of age
Signs include straining to defecate, haematospermia and ribbon-like stools
Castration is curative — the prostate involutes within weeks of surgery
Osaterone acetate and finasteride provide medical management for dogs not castrated
BPH predisposes to prostatitis and prostatic cysts that cause additional welfare problems

Welfare Considerations

Dogs with significant BPH experience chronic discomfort when defecating and may develop constipation from prostatic pressure on the rectum. The progression is slow enough that owners often normalise the straining behaviour over months. Castration provides definitive resolution with rapid prostate involution and symptom relief. Where castration is not appropriate — for example in working dogs or those intended for stud — osaterone acetate provides temporary prostate volume reduction. Regular prostate assessment by rectal examination in intact male dogs over 5 years old enables early detection.

What You Can Do

Ask your vet to assess prostate size at annual health checks for intact male dogs over 5
Consider castration as a curative and permanent solution to BPH
Report straining to defecate, ribbon-like stools or blood in urine promptly
Discuss osaterone acetate treatment if castration is not appropriate for your dog
Monitor for complications including prostatitis which requires urgent antibiotic treatment