60 inches ;)
not if you are compering size
Bigger than yours.
I cannot think of any way that the size of a penis would increase or decrease the chances of a Bacterial infection.
The size of the penis does not change after puberty, so it will be the same size as it was when you were 20. The average size of an adult male is 5.5 inches, as measured from the top.
No, only half its size.
In male puberty, the first thing is increase in size of testis. Second is the increase in penis size also growth of pubic hair.
Only the male Sloth has a penis, it is very large ranging from 8-10 inches in length when fully erect (sexing an adult male from female is difficult due to the males large penis size.)
approximately 5" in an erect adult male armadillo.
Quite small
Depends on whether your penis is erect or flacid. Also, if you are Chinese I wouldn't worry - you're ahead of them in terms of penis size.
It takes time for all parts of you to grow to adult size. The average size of a penis for an adult grown male is 5.57" when erect.
No. Average size for an adult male is 14.5cm. There is no exact average. Penis' come in many different sizes. I wouldnt worry