Dogs are widely considered as the best friends of human beings,they are popular as they can do a lot of work such as guarding the yard,guiding the blind,and helping prohibit drugs.They are also popular with many citizens who keep them as pets nowadays.Citizens rear them for a number of reasons for example to drive away solitude,to reduce pressure from a busy life or just for individual interest.However,the large number of pet dogs in cities today have caused many problems.They cost too much expenditure,disturb the peace of community life; worst of all,they transmit some terrible diseases to many innocents every year.I think we should forbid keeping pet dogs in cities.
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问题补充：t is reported that there are 100 million pet dogs in China and the number is predicted to increase by five times if there aren’t any policies to restrict the situation.In the city of Shenzhen,there are 100 thousand pet dog owners and 46.7% of them own more than 2 dogs,and every year people have to pay more than 100 million Yuan to support the dogs.① As far as we know,pet dogs are completely consumers.We have to provide food,homes,and many necessities for them; what’s more,most of the owners have developed a good friendship with their pet dogs,and they not only provide basic necessities but also take their friends to consume in some top-grade places such as famous barbershop
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