A. Another possible cause of intermittent bleeding from the penis in an unneutered male is something called Benign Prostatic Hypertrophy, or BPH. In intact male dogs the prostate gets larger under the influence of testosterone (from the testicles) and they are prone to intermittent bouts of prostatitis (inflammation and/or infection of the prostate) that cause bleeding. This needs to be addressed with your veterinarian, because if these episodes continue severe prostatic infection can occur. Neutering the dog resolves the problem.
A. This is probably due to bladder stones or a urinary infection. both conditions are painful and can cause bleeding from the penis.
You should take him to the vet in order to identify the condition and treat it as soon as possible. a urinary infection will require antibiotics. bladder stones is a more complicated treatment course that may involve surgery in some cases.
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