Find out why this cat and mouse have put aside their usual differences and become best buddies.

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In Tokyo, Japan, these cute animals used to be enemies... but they have now signed a peace treaty to be best friends.
How? Well, it's actually down to science. Mice fear cats because they are innately conditioned to express fear when they sense the odour of a predator. So, if you take away these specific receptors for sensing odour, mice ne