Old dog Spot was bewildered. When he crawled under the canvas he had not dreamed that he was entering the main tent of the circus. He saw so many strange sights that he didn't know whether to bark or to crawl away and hide somewhere. Yet among all those people he felt lonely. He couldn't see anybody he knew.  
All at once the bandsmen began to play louder than ever. They seemed to be trying to burst their horns—or themselves. And men in flowing robes, each one in a sort of little two-wheeled cart and driving four horses , came tearing past the place where Spot was standing.
 
It was a race! And if there was one thing that Spot liked more than another it was a race of any kind. He gave a few delighted barks and ran after the horses.
 
Spot followed them twice around the big tent. And just as he fell into a jog—for the race was finished—he heard a whistle that gave him a great thrill. He stood still for an instant. Then he dashed toward the nearest seats.
 
A moment later he was upon Johnnie Green, who sat in the lowest row and seemed as glad to see Spot as Spot was to see him.
 
Lying between Johnnie's feet, Spot watched the rest of the show.
 
At last the circus was over. The Green family, with Spot at their heels, went back to the place where they had left the bays and the carryall. And in a few minutes more they were on their way back to Pleasant Valley and............