阅读短文，回答问题

Today I took Frank to have a training class(培训课). We got there earlier than most of the other dogs and their owners.

Mr. Brown helped us teach our dogs some skills (本领). When the dog did it, he said, "Good dog!" He was a serious man but he laughed a lot when staying with dogs. He said Frank was smarter than other dogs.

Next to Frank was also a smart dog. His name is Sam. His short legs made him look funny, but he could run faster than many of the bigger dogs. His owner was a quiet girl and looked a little shy. So I said hello to her first. I hoped she could be my friend.

At the end of the class, Mr. Brown told me that Frank did the best in this class and he would give him a ball.