Genetic Mistakes: Eight Two-headed Living Lives

It’s always hard to draw a parallel line when it comes to “two animals share with one body” or/and “one animal is conjoined with two heads”. While the most common animals with two heads or two faces like snakes, tortoises and cats do not always shock the experts, many other uncommon two-headed species and two-headed human as well, always shock the experts. Not surprisingly, there is always a controversy debate on this issue among the community.

A gene mutation refers to a permanent change in the DNA sequence of a gene which might alter/modify the amino acid sequence of the protein encoded by the gene itself. Gene mutation can either be inherited from a parent (called hereditary mutation) or acquired during a person’s life (called acquired or somatic mutation). The hereditary mutation is a type of mutation that can present throughout a person’s life in almost every cell of their body while somatic mutation can occur in the DNA of individual cells on the cause of environmental factors (such as ultraviolet radiation from the sun) or it might occur if a mistake is made during the time DNA copies itself during the stage of cell division or a mistake occurs when it is being replicated (in S phase of the eukaryotic cell cycle).

De novo mutation is another type of mutation that occurs in sperm cell or an egg just after fertilisation, explaining the reason of the presence of genetic disorders in an affected individual who has a mutation in each of their cell, although they have been brought up in a family without a record of such strange and rare disorder. Nevertheless, up to now, certain genetic disorders are extremely strange and unbelievable and they cannot be explained with a scientific theory alone.

Two-headed Cat

Image source

In November 2008, this unusual kitten with two faces cat was born in Midvale. In the same year alone, in August, a kitten with four eyes, one mouth and two noses was born in Ohio, but it died after five days.

This two-headed kitten appeared to be healthy since it meowed and purred just like other normal cats. Its deformed appearance was believed to be the result of a congenital deformity which might have occurred in its early embryonic development.

Two-headed Fish

Image source

One rare mutated fish with two heads was caught downstream of Lake Athabasca from Alberta’s oilsands region in 2008, and later the capture of this deformed fish sparking headline around the world. It was 2.5 kilogram in weight and was observed to have two mouths, one beneath the other. Its deformity was suspected to be linked with contamination of the Athabasca River. Scientifically, it’s common to see deformed fish that is caused by mutation during the increased of water temperature in the egg phase.

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28 Responses to “Genetic Mistakes: Eight Two-headed Living Lives”
  1. Jenny Heart Says...

    On March 16, 2010 at 7:59 am

    People today who think they have too many trials need to read this and really look at these pictures with a thankful heart. The two headed animal are heartbreaking to see too. Great article Chan!

  2. deep blue Says...

    On March 16, 2010 at 8:12 am

    Extreme mutations Chan. These were simply bizarre and out of this world. But I suppose it happened after all within the planet,lol.

  3. deep blue Says...

    On March 16, 2010 at 8:14 am

    I can’t click I like it. It just won’t show up, sorry.

  4. BC Doan Says...

    On March 16, 2010 at 9:16 am

    I’m not used to see two headed animals, so that was interesting..

  5. Vikram Chhabra Says...

    On March 16, 2010 at 10:49 am

    I was touched by the story and pictures of the conjoined twins..

  6. clay hurtubise Says...

    On March 16, 2010 at 2:45 pm

    Interesting piece. I would suspect that with the increase in artificial environments we put ourselves into, human mutations are likely to rise.

  7. LewSethics Says...

    On March 16, 2010 at 2:54 pm

    Very disturbing images Mr. Chang. Somehow it makes life a little easier to cope with when you see other (beings) with enormous hurdles living with the cards they were dealt.
    I look forward to viewing your other articles as soon as I get over this one (haha).

  8. BluSphere Says...

    On March 16, 2010 at 4:21 pm

    This is so fascinating! and so weird.. I think it’s interesting with the animals, but I also think it’s very sad for people who’re together like this :(

    Good article.
    A W H

  9. giftarist Says...

    On March 16, 2010 at 4:35 pm

    Great and interesting article. A bit disturbing images. Thanks for sharing this.

  10. Judy Sheldon Says...

    On March 16, 2010 at 9:47 pm

    Chan, I saw a documentary once on Siamese twins that were co-joined with two heads. The men had to cohabit the same body and were middle aged having lived their entire life like that. They had learned to adapt – and like Jenny said; we complain.

  11. PR Mace Says...

    On March 16, 2010 at 10:57 pm

    We think we sometimes have a hard life but think about the life of those twins. I saw a TV special about them once and they function quite well. Chan, this was a very good article and well researched.

  12. Eunice Tan Says...

    On March 16, 2010 at 11:21 pm

    Very interesting. However it is a pity for them, men and animals who have two heads respectively.

  13. Inna Tysoe Says...

    On March 16, 2010 at 11:56 pm

    Thanks for that.

  14. Unofre Pili Says...

    On March 17, 2010 at 2:54 am

    They are a sorry sight to behold. A very interesting article.

  15. MCA Says...

    On March 17, 2010 at 3:32 am

    good share. thanks for sharing

  16. shivaleen Says...

    On March 17, 2010 at 10:55 am

    Really very Great Post, Amazing post.

  17. CA Johnson Says...

    On March 17, 2010 at 7:05 pm

    This was a very interesting article. I feel so bad for the people who are born that way. My sister and I are twins and I know there are Siamese out there. Knowing that humans and animals could be born this way is definitely a wakeup call to be grateful for what you have because there are others who are suffering worse than you are.

  18. papaleng Says...

    On March 18, 2010 at 2:05 pm

    Another well-researched article. At times, we see two -headed animals as fascinating creatures but for humans born with two-heads, the feeling will be of sadness.

  19. monica55 Says...

    On March 19, 2010 at 3:26 pm

    These are some of the disorders that sin and imperfection bring us. Those of us who do not have any of these bizarre flaws, should count our blessings everyday. Great share.

  20. Alive11 Says...

    On March 20, 2010 at 3:32 pm

    Very Brilliant Write

  21. standingproud Says...

    On March 21, 2010 at 7:32 am

    Another of your writes that freak me out …
    If I had two heads/which would mean two brains then I would be brilliant :)

  22. l barr Says...

    On April 13, 2010 at 9:25 am

    send all two headed animals to Iran

  23. ShadowPsychos Says...

    On May 2, 2010 at 1:20 pm

    great write :)

  24. Chickenroot Says...

    On February 4, 2011 at 6:02 pm

    While these individuals may not have the easiest lives in the world, I believe it is unfair to assume that their lives are less enjoyable as a result of it. Perhaps they are simply happy now with the thought that they were given the opportunity to have a lifelong, intimate closeness to their sibling- a chance that almost no one else on Earth can have.

  25. Titanium Pen Says...

    On February 26, 2011 at 10:36 pm

    Are those pictures photoshopped?

  26. business internships Says...

    On November 23, 2011 at 10:31 am

    very interesting and knowledge giving article.

  27. Anonymous Says...

    On May 28, 2012 at 11:01 pm

    Post pic of 2 headed human

  28. Anonymous Says...

    On May 28, 2012 at 11:01 pm

    Post pic of 2 headed human plzz!

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