I had two pets in my house， a dog named Sam and a cat named Katty．They loved each other so much that they were always together．When I played with one， the other joined in．If Sam barked at something，Katty ran to see what it was． When I took either one out of the house， the other was always waiting by the door when we returned． That was the way it was for years．

    But one day， without any warning， Sam died of a heart attack （心脏病突发） at the animal hospital and I had to walk back to our house alone． This time，there was no Sam for Katty to greet and no way for me to explain why she would never see her friend again．

    In the days that followed， Katty seemed heartbroken． She could not tell me in words how she felt， but I could see the pain and disappointment in her eyes whenever anyone opened the front door and the hope whenever she heard a dog bark．

    As the weeks went by，the cat seemed to feel much better．One day as I walked into our living room，I happened to have a look at the floor next to our sofa where we had a statue （塑像） of Sam that we had bought a few years before． Lying next to it， one arm around the statue's neck， was Katty， happily sleeping with her best friend．

（1）How were Sam and Katty getting along with each other？ （no more than 6 words）

　　

（2）What happened to Sam one day？ （no more than 10 words）

　　

（3）Why was Katty heartbroken？ （no more than 8 words）

　　

（4）请将文中画线的句子翻译成汉语．

　　

（5）请给短文拟一个适当的英文标题．