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Cats lived with soldiers in trenches, where they killed mice during World War I.

Cats are wonderful at keeping the vermin population in check, even in the trenches!

In multi-cat households, cats of the opposite sex usually get along better.

People are sort of that way too.

In contrast to dogs, cats have not undergone major changes during their domestication process.

That's good to know.

Miacis, the primitive ancestor of cats, was a small, tree-living creature of the late Eocene period, some 45 to 50 million years ago.