photo: Richard Gould / Wikicommons
The blue whale holds the record for the animal with the longest penis. The average length is 2.4 metres with a girth of between 300 and 360 millimetres. The largest blue whale penis is estimated to have been 5 metres long, based on a specimen of a tip of the organ, measuring 170 centimetres. The land animal with the largest penis is the elephant, which has an average length of 1.8 metres.