小狗的英文作文可以參考以下內容：
Last year, my friend gave me a little dog. I was fond of him very much. I liked to play with him after school and he liked to follow me wherever I went. I was very glad that I had a "bodyguard".
Last winter, I was very busy with my lessons and came home very late every day. However, no matter how late I went home, my dog used to stand at a corner near my school waiting for me. When I passed there, he barked two or three times and then ran towards me. It seemed that he was calling me.
My dog not only took good care of me, but also was responsible at home. When strangers came to my house, he barked at them but not hurt them. What a lovely dog he is!
I have a pet dog named Lucky. He has white and soft furs with two small ears and a long tail. He is given by my aunt as my birthday gift.