Can you have two penis

Diphallia , penile duplication PD , diphallic terata , or diphallasparatus , is an extremely rare developmental abnormality in which a male is born with two penises. When diphallia is present, it is usually accompanied by renal , vertebral , hindgut , anorectal or other congenital anomalies. There is also a higher risk of spina bifida. It is thought diphallia occurs in the fetus between the 23rd and 25th days of gestation when an injury, chemical stress, or malfunctioning homeobox genes hamper proper function of the caudal cell mass of the fetal mesoderm as the urogenital sinus separates from the genital tubercle and rectum to form the penis.
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Anatomy of the Human Penis

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21 Bad Penis Habits You Should Ditch ASAP

Male lizards and snakes have to make a choice when they mate: which penis should they use? They have two. One is connected to their right testis, and one to their left. Now two biologists from the US have found that some lizards alternate their penises as each is depleted of sperm. In this way, they maximise their chance of fertilising a female. They found that the penis a lizard used depended on which they used last time they mated, and how long ago they last used it Animal Behaviour, vol 40, p In response to such sperm competition, males of some species have developed sperm that forms into a hard plug, blocking the way for the sperm of any other males.
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The 15 Different Kinds of Penises You'll Probably (Definitely) Encounter In Life

Why two? Many animals, including humans, have a gene called Sonic hedgehog Shh —named by discoverers who were clearly twisted Sega fans. Now researchers at the University of Florida have confirmed that prolonged exposure to Shh causes the growth of penis-like appendages in cartilaginous fish, after completing an experiment focusing on skate embryos. In an experiment, researchers found that the presence of Shh caused claspers to appear late in male pelvic growth.
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Just because vaginas get gynecologists and annual exams and all that jazz doesn't mean you can just forget about your penis health. In fact, there are a lot of problems that can arise if you don't look after your penis properly. So to find out more about how to keep your penis as healthy as possible, BuzzFeed Health spoke with two board-certified urologists: Dr. Here are some common mistakes, bad habits, poor hygiene practices, and behaviors they'd suggest ditching ASAP. New bumps, rashes, blisters, warts, or discoloration on the penis should never be ignored, especially if they're red or painful or itchy.
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