没长牙的小猫是多大？
为下面的文章写一段50个词左右的英文摘要，要求：1、内容正确，没有语法错误2、逻辑清晰，表达流畅3、正确使用常见的复合词语和短语4、正确使用一般现在时、现在完成时和一般将来时5、字数在50—60个词之间。
内容：According to one study.17% of people say they wish they had a pet on a daily basis. Cats constantly rank among the most popular pets by far. Cats may look like they have a hard life. But， contrary to popular belief， cats are almost entirely independent of us. Yes， they do forage for themselves. They sleep a lot. They look at us as if we were aliens from another planet.
Cats live to be 10-15 years old. Catching a cat before it is a year old is like adopting a kitten. That is because a cat is completely independent when it is between one and three years of age. To a certain extent， cats look after themselves.
Nowadays. people often have grey or silvery cats. The silvery look comes partly from a gene and also from being outside in the sun. Silvery cats have a much higher risk of having an injury or death from having a car hit them.
Cats on wheels
Cats love to sit on stairs. They like cars and doors. You can sometimes see them sitting in the dashboard. Some cats go to the vet unless their owners tie a string to them. That’s because they can’t get out of the car.
Cats are very different in how they look. The colours they have and the stripes and dots. Short-hairs get very hot in summer. Long-hairs have fur so thick that snow does not come off.
Cats in movies
Cats love to be on a person’s lap. They like having their tummies stroked. It makes them feel wonderful. Cats really like to watch TV. Some cats have starred in movies.
Cats in space
Ivan was the first cat into space. He went with astronauts for 3 days in 1965. Ivan， a wild cat， was very well-behaved. There have been other cats into space. Pikachu. from Poké man went in 2002.