资料题：City people keep cats became（　）。

A cat is easy to care for.You don't have to walk a cat the way you do a dog.And a cat does not have to be with people all the time.Sometimes it likes to be alone.Cats are fun to watch, too.They like to play.They make good pets.Cats like to keep clean.They clean themselves many times each day.They do this by licking.They lick themselves when they get up each morning.They clean themselves after eating.Most cat lick themselves again at night.They do this before they go to sleep.Cats can't see as well as people.Everything looks gray to them.But they can make things out better when there's not much light.They also smell things better than people can.They use their noses to find things that are far away.They can hear more sounds than people can, too.People of all kinds have cats.Farmers like cats.Mice eat plants that farmers grow.Cats kill these animals.So farmers like to keep their cats outside.But not all cats have to stay out-side.City people keep them in their homes.They make good house pets.Cats can do many things.They go up trees, run fast, and jump high.When cat fl, most times they land on their feet.They are beautiful animals, too.People have always liked them.So cats show up in books, on TV shows, and in the movies.