Prostate disease is extremely common in intact male dogs and causes significant welfare impact, with castration being both preventive and curative for most conditions.
Prostatic disease causes significant chronic discomfort in affected intact male dogs - BPH causes constipation-like straining and urinary discomfort that is an accepted consequence of non-castration that needn't be. The welfare case for castration of male dogs who are not being used for breeding is partly based on prevention of these common and uncomfortable conditions. Dogs with established BPH or prostatitis experience meaningful welfare improvement after castration. Owners who maintain intact males solely for lifestyle preference should be aware of the significant welfare costs of common prostatic disease.