Nowadays, pets have become one of the most important parts of our lives. You can see dogs playing in the lawn, cats sleeping beside the window, and even spiders and lizards standing on a boy/girl's shoulder. As a result, more and more people love their pets so much as to treat them as one of their family members. However, I don't think the idea to build a close relationship with pets is a good one.
    In my part, pets are not human beings, in many ways, they are quite different from us, thus the troubles they make may be harder to solve and sometimes irrevesible. First, most of pets have shorter life span than human. The pet-owners often have to experience their lovely pets' death and