Freakiest and Weirdest Male Reproductive Organs

Let’s see some of the most peculiar and unusual male reproductive organs.

In the animal world, a male’s sex organ is called penis. The plural form of ‘penis’ is either penes or penises.

Image Source

These are not figurines. These are different male reproductive organs of different animals.

Bean Weevil (Callosobruchus analis)

Image Source

One of the weirdest male reproductive organs belongs to the Bean Weevil; it’s covered in spines from base to tip. The spiked penis of the Bean Weevil had been found out by researchers that each act of mating scars the female beetle’s reproductive tract. Such mating method is known as traumatic insemination, an extreme mating technique that some insects have developed.

Echidna (Tachyglossus)

Image Source

One of the four species of egg-laying mammals is the Echidna. The male echidna has a weird-looking sex organ – it has a four-headed penis. During mating, the heads on one side ‘shut down’ and do not grow in size; the other two are used to release semen. The heads used are swapped each time the mammal has sex. This animal is endemic to Australia and New Guinea and is also known as “spiny anteater”.

Blue Whale (Balaenoptera musculus)

Image Source

The Blue Whale, at 32.9 meters long and 172 metric tons in weight, is the largest animal ever. Being the largest animal, male Blue Whale has also the largest penis- it is about 2.4 m or 8 ff long.


Image Source

Kangaroos, which are native to Australia, have peculiar penises. They have a bifurcated penis, meaning, it separates into two columns, and so the penis has two ends. Ooh… that’s quite bizarre! The marsupial on the above-photo is a Red Kangaroo (Macropus rufus), the largest of all kangaroos.

Dogs (Canis lupus familiaris)

Liked it
22 Responses to “Freakiest and Weirdest Male Reproductive Organs”
  1. Gone. Says...

    On January 21, 2010 at 1:18 pm

    Okay, now I’ve seen it all! Um… some interesting stuff, Nobert

  2. Vikram Chhabra Says...

    On January 21, 2010 at 2:35 pm

    Hehe. This was definitely an eye catching article…:)

  3. Juancav Says...

    On January 21, 2010 at 5:48 pm

    Interesting facts in animal sex organs ,and person too.

  4. joyhyena29 Says...

    On January 21, 2010 at 7:55 pm


  5. Eunice Tan Says...

    On January 21, 2010 at 11:04 pm

    Well researched. Very unique topic.

  6. xoxo Says...

    On January 22, 2010 at 10:17 am

    OMG…. Lol! Very interesting post. Quite an eye opener too lol again

  7. Melody SJAL Says...

    On January 23, 2010 at 1:39 am

    Very intriguing.

  8. alensmith Says...

    On January 24, 2010 at 9:00 am

    really very very great article thanks for sharing
    really very good post.and thanks for ur reply that i will find in my article

  9. Ruby Hawk Says...

    On January 24, 2010 at 11:48 pm

    It was an eye opener. Strange

  10. AlmaG Says...

    On January 26, 2010 at 2:26 am

    How very interesting… a lot of weird things I saw.

  11. Anuradha Ramkumar Says...

    On January 27, 2010 at 1:00 pm

    These are really weird and freaky. Interesting.

  12. alensmith Says...

    On January 28, 2010 at 3:43 am

    really very very nice post

  13. alensmith Says...

    On January 30, 2010 at 10:09 pm

    i dont know why yoiu are not active in triond you are such a good writter.

  14. alensmith Says...

    On February 3, 2010 at 7:41 am

    First of all thanks for your valuable sugestion on my post.and thanks on your reply also which i will find in my post again.

  15. K Kristie Says...

    On February 4, 2010 at 8:12 am

    Haha! I mean Hoho! That first pic looks…interesting…and it would be interesting to see the echidna’s, LOL!

  16. Luis Cayetano Says...

    On February 6, 2010 at 3:03 am

    Male genitalia are actually the most rapidly evolving system in the animal kingdom. It isn’t clear why, but one possible reason is that they are engaged in a coevolutionary arms race with females. Another reason might be that the genitalia evolve to stimulate females in various ways, and that the basis for this stimulation is constantly shifting.

  17. clickmarbin Says...

    On February 10, 2010 at 12:40 am

    cool info ! you WOW me again =)

  18. Kate Smedley Says...

    On February 10, 2010 at 1:51 pm

    What can I say … fascinating and I definitely learned something!!

  19. naraja00 Says...

    On February 12, 2010 at 3:04 pm

    i must say thats quit an interesting subject

  20. swatilohani Says...

    On February 24, 2010 at 4:27 am

    well reseached

  21. deep blue Says...

    On February 27, 2010 at 7:59 pm

    Nice and interesting post, kabayan.

  22. Gary Muir Says...

    On September 26, 2011 at 9:26 am

    The Big Red Kangaroo is one of the few marsupials that actually does not have a forked penis.

Post Comment
comments powered by Disqus