小狗很受欢迎,因为他们对人们友好.有许多不同的狗,你.Dogs are very popular because they are very nice to people.There are many different dogs and you should find one to suit you.Some dogs,like sheepdogs,should not be pets because they need exercise every day and they need a lot of space.Dogs need much love but still reward you a lot.小狗很受欢迎，因为它们对人们友好。有许多不同的狗，你应该找一只适合你的。有些狗，比如牧羊犬，不应该成为宠物，因为它们每天都需要锻炼，并且需要很大的空间。狗狗需要大量的爱，但仍值得你拥有。