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They are the only accessory reproductive glands in male monotremes. Placental mammals usually have one pair of bulbourethral glands, [ 3 ] while male marsupials have 1–3 pairs. [ 3 ] [ 4 ] [ 5 ] Of all domesticated animals, they are absent only in dogs.
A bull A Charolais bull. A bull is an intact (i.e., not castrated) adult male of the species Bos taurus ().More muscular and aggressive than the females of the same species (i.e. cows proper), bulls have long been an important symbol in many religions, including for sacrifices.
The male accessory glands are the ampullary gland, seminal vesicle, prostate, bulbourethral gland, and urethral gland. [5]The products of these glands serve to nourish and activate the spermatozoa, to clear the urethral tract prior to ejaculation, serve as the vehicle of transport of the spermatozoa in the female tract, and to plug the female tract after placement of spermatozoa to help ensure ...
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[8] [9] Cattle breeds vary widely in size; the tallest and heaviest is the Chianina, where a mature bull may be up to 1.8 m (5 ft 11 in) at the shoulder, and may reach 1,280 kg (2,820 lb) in weight. [10] The natural life of domestic cattle is some 25–30 years. Beef cattle go to slaughter at around 18 months, and dairy cows at about five years.
In all cattle species, a female twin of a bull usually becomes infertile due to intrauterine exposure to high testosterone levels. She is functionally a partial intersex, and is commonly called a freemartin. A wild, young, unmarked bull is known as a micky in Australia. [7] An unbranded bovine of either sex is called a maverick in the US and ...
A "herd" bull is the dominant bull in a herd. Younger, smaller bulls are known as satellite bulls, as they tend to cling to the edges of a herd trying to pick up any cows willing to leave the herd. Larger satellite bulls will challenge the herd bull to try and take control of the herd.
Reproductive system: testes – ovary – pregnancy. Fish#Reproductive system; Mammalian reproductive system. Human reproductive system; Mammalian penis. Os penis; Penile spines; Genitalia of bottlenose dolphins; Genitalia of marsupials; Equine reproductive system; Even-toed ungulate#Genitourinary system; Bull#Reproductive anatomy; Carnivora# ...