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A 1990 study of 109 Chinese men identified the average flaccid stretched penis length of 13.9 cm (5.5 in), and among 14 of the men, the average erect length found was 13.7 cm (5.4 in). [36] Another 1993 study of 104 Chinese men found the average stretched penis length of 13.8 cm (5.4 in), and an average erect length of 13.5 cm (5.3 in). [37]
During Tanner V, females stop growing and reach their adult height. Usually, this happens in their mid teens at 14 or 15 years for females. Males also stop growing and reach their adult height during Tanner V; usually this happens in their late teens at 16 to 17 years, [medical citation needed] but can be a lot later, even into the early 20s.
An erect penis may be straight or curved and may point at an upward angle, a downward angle, or straight ahead. As of 2015, the average erect human penis is 13.12 cm (5.17 in) long and has a circumference of 11.66 cm (4.59 in). [2] [3] Neither age nor size of the
While 18–20 cm 3 is an average adult size, ... puberty begins between 10 and 13 years of age. ... Saunders. pp. 689– 724. ISBN ...
Among bird species with a penis are paleognaths (tinamous and ratites) [12] and Anatidae (ducks, geese and swans). [13] The magpie goose in the family Anseranatidae also has a penis. A bird penis is different in structure from mammal penises, being an erectile expansion of the cloacal wall (in ducks) and being erected by lymph, not blood. [14]
A common criterion is a dorsal (measured on top) penile length of at least 2.5 standard deviations smaller than the mean human penis size for age. [1] A micropenis is stretched penile length equal to or less than 1.9 cm (0.75 in ) in term infants , and 9.3 cm (3.67 in) in adults.
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The web site has this comment "Ansell, makers of LifeStyles Condoms, has conducted research into average penis size. The survey found that the average length of the erect penis is 5.877 inches (14.928cm), with the majority ranging between the small 5.5 inch penis size (14cm) and the large 6.3 inch penises (16cm)."