Persistent frenulum in bulls is a congenital defect in which the frenulum, a band of connective tissue that normally regresses by puberty, abnormally persists between the glans penis and the prepuce (sheath).

Surgical management of penile conditions in bulls refers to the diagnosis, surgical intervention, and post-operative care of anatomical or pathological abnormalities affecting the penis and prepuce of bulls that interfere with normal mating behavior or semen collection.

Castration in cattle is the removal or inactivation of the testicles in male cattle (bulls or calves), typically performed to prevent reproduction and modify aggressive or undesirable behavior.

Vasectomy in bulls is a surgical procedure in which a portion of the vas deferens (the duct that carries sperm from the testicles) is removed or blocked to render the bull sterile.

Andrology instruments are specialized tools and equipment used in the collection, analysis, processing, and preservation of semen for artificial insemination.

Artificial insemination instruments are specialized veterinary tools used to facilitate the breeding process in livestock, particularly cattle and buffaloes.

Coital injuries in male animals refer to the physical trauma or pathological conditions affecting the genital organs—primarily the penis, prepuce, scrotum, and associated structures—during or following mating.

Prostatic hyperplasia is a non-cancerous enlargement of the prostate gland. It is present in most dogs over 5 years of age that have not been castrated.

Pathology of the prostate gland is not common in all animals except the dog in which prostatitis and hyperplasia of the prostate are common.

Seminal vesiculitis is an inflammation of the seminal vesicles. It is most common condition affecting the gland of bulls, stallions and boars. It is rare in bucks and rams.