Jun 10, 2021 23:00:00

What animal has the largest penis?

Many people may be concerned about how big their penis is compared to the average man's, but few people have compared the length of their penis with that of other animals.

BioArk , a channel that deals with animal-related topics derived from the popular YouTube channel RealLifeLore , has released a movie about the question ``What animal has the largest penis?''

Which Animal Has the Biggest Penis? - YouTube


The movie starts with the point that the penis is an organ that is inserted into the body of a female or hermaphrodite to deliver sperm.

In many animals, the penis is an organ specifically used to deliver sperm.

However, the penis of mammals is exceptional because it also serves as an organ for excreting urine.

Also, not all animals have penises. For example, females naturally don't have penises.

Male spiders also don't have penises. Male spiders store semen in short leg-like organs called palps , which they insert into the female's genitals during copulation. The palps are used not only for mating, but also to assist in sensation and feeding.

In order for the penis to do its job, it must be inserted into the female's genitals, but it must be fully erect.

Among mammals, marsupials, horses, hyenas, and humans have erection mechanisms.

Blood collects in

the corpus cavernosum of the penis and it becomes erect, making it hard enough for insertion.

However, this system, which produces an erection by engorging the corpus cavernosum, takes time to prepare, making it inconvenient for animals who are relatively vulnerable in the natural world to constantly be at risk of being preyed upon. So some mammals use a bone called

the penile bone to keep their penis hard.

Penile bones are found in many species such as Monkeys, Cats, Bats, Rodents, and Moles, and dogs are also famous for having penis bones.

The size of the penis bone varies depending on the animal, but among them, the walrus, which has a large penis bone, can reach up to 75 cm.

If you think purely about the length of the penis apart from the penis bone, BioArk says that the penis of

the blue whale , the largest animal on earth, is the longest, with a length of about 2.4 m to 3 m.

By the way, the penis of the elephant, which is the largest animal on land, is about 1 meter long.

However, the blue whale's penis is thin compared to its length, and has a very elongated shape with a diameter of only 30 to 36 cm.

The blue whale, which has a very long penis, has a large amount of ejaculation, and it is said that one ejaculation produces about 15 liters of sperm.

By the way, a blue whale's penis is about one-eighth of its body length, making it relatively larger than a human, which is about one-twelfth of its height.

When considering the ratio to body length, BioArk points out that we should focus on ``animals that live on the surface of blue whales'' rather than blue whales.

It is

a barnacle that clings to surfaces such as rocks, large aquatic animals, and ships.

Barnacles look like shellfish, but they are a type of crustacean like shrimp and crabs. Barnacles, which basically remain stuck and do not move, are hermaphroditic and can reproduce alone, but they usually mate with nearby individuals.

The barnacle uses a very long tube-shaped penis for this purpose. Barnacles need to ejaculate by extending their penis to nearby individuals while remaining attached to the rock, so the length of the penis is about eight times the body length.

Another example of an animal that has a penis that is extremely long compared to its body length is the waterfowl duck. Birds generally do not have penises, but ducks do have penises that can be rolled up like a watering hose.

Among them, the duck called

the long-tailed duck has a very long penis, and the average individual is about half the length of the body.

In addition, an adult long-tailed duck is about 36 to 46 cm long, and a typical individual has a penis of about 20 cm.

The largest penis ever discovered in a long-tailed duck was 42.5 cm long.

If humans had penises of the same proportions, their penises would hit the ground unless they climbed on a stepladder.

In addition, cephalopods such as octopuses and squids have arms that function as penises, called

interdigital arms , and these interdigital arms generally develop longer than the body.

In some cephalopods, where the male is much smaller than the female, the amputated sex arm is left in the female's genitals to fertilize the eggs.

Another animal with a strange penis is

the echidna . Male echidnas have a four-pronged penis, and females have two uteruses.

During copulation, the male uses two of his four penises to fertilize the female.

And what BioArk claims is ``an animal with the theoretically longest penis'' is

the Chilean sea slug that lives in the Western Pacific and South Pacific.

The penis of the Chilean sea slug is about 3 cm long. This alone does not make it the longest in the animal kingdom, both in terms of length and proportion to the body.

However, it has been

discovered that the penis of the Chilean sea slug is ``disposable'', and that it is detached after mating and regenerates a penis capable of mating within 24 hours.

In other words, if the penis is cut and regenerated repeatedly, the total length of the penis will exceed that of a human penis in about two weeks.

And BioArk claims it will surpass the penis of a blue whale in one year.

If the Chilean sea slug had an infinite lifespan, it would be possible to have a penis as long as the distance from the earth to the sun in 40 billion years.