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Japanese scientists create mice with no fear of cats

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Uploaded by on Jan 4, 2008

om and Jerry just wouldn't have been the same if it had featured one of Ko Kobayakawa's mice.

The Tokyo University professor has just unveiled mutant mice that have lost their innate fear of cats.

Rather than flee or freeze when confronted with their feline enemy, the mice sniffed and even played with them, blissfully unaware of the potential dangers.

Kobayakawa developed the fearless mice by shutting down receptors in their olfactory bulb - the area of the brain that processes information about smells - which would normally induce panic as soon as they get so much as a whiff of a cat.

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Top Comments

  • what a stupid experiment..." we hope we can make animals no longer fear what kills and eats them"......uhh, isnt that fear suppose to save there lives??

  • wow that mouse is so lucky that kitty is laud back lol

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  • @antega I think that's a good experiment. And that's a good question. I've wondered about that myself. Here's the thing, I think preadators react to fear and that may be one of the main drives behind preadetory behavior. The one thing ALL living things hate is when something smaller/weaker, stands its ground. Look at the honey badger, he don't give a shit! He's small enough to punt, but the bastard's fearless, he doesn't back down or run so no one wants to fuck with him. I say take fear away.

  • Remove Garfield and bring Heathcliff now.

  • what a waste. Is this supposed to be like a humane death? That mouse is going to have a hard time learning new things. I can't feel fear either, and it makes it harder to learn because my mind can't associate complex tasks. I have schizophrenia or something. They call it schizophrenia.

  • Looks like they damaged the amygdala in the brain of the mouse.

  • Think of all the money that went in this useless experiment.

  • The headline should be Japanese scientist create a cat that has no killer instinct to kill mice. Creepy!

  • This research is irresponsible and dangerous!

  • What is the point of this?

  • lolzz those scianetist dont need to those genes changes to the mice, coz big rats already can scared the damn hell out of cats since they're as big as the cats.

  • something funny about this video 0.03

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