Argentine blue-charge (Oxyura vittata) otherwise called Lake Duck, Argentine lake duck or Argentine bronzed duck, is a little South American solid followed duck, however holds the Guinness World Record for biggest avian regenerative organ.
It has a momentous 42.5 cm (17 inches) long penis, when completely erect, at a body length of 20 cm! (Might you be able to envision a 6 ft (1.8 m) tall man having a 13.3 ft (4 m) long penis?). It is the longest penis of all vertebrates, in connection to body length. At the point when not being used, the organ is regularly wound up in flabby state.