"BOW-WOW!" BARKED ZIP, AND ON HE RAN, FASTER AND FASTER.
"Bow-wow! Bow-wow!" barked Zip, and on he ran, faster and faster. He seemed to enjoy it very much.
It was a good thing the woods were not of the roughest kind just at this place, for otherwise the dog-cart would have been smashed to pieces. As it was it bumped and swayed from side to side, and Laddie and Russ had all they could do to keep from bouncing out.
"Whoa! Whoa!" called Russ, but Zip paid no attention. Nor did he care how much the little boy driver pulled on the lines. As Zip had no bit in his mouth to hurt him when it was pulled on hard, he was not going to stop. The leather muzzle around his nose did not hurt him as a bit would have done.
I don't know just how far Zip would have run after the white rabbit, if something had not happened to put an end to the chase. The rabbit, probably getting tired of being run after, suddenly darted down inside a hole. This was his burrow, or underground house, and once down in that, the rabbit knew no dog could get him.
So into his hole, as if he were going down cellar, went the bunny. And Zip, with a howl of disappointment, saw the rabbit disappear. The dog stopped at the outside edge of the hole, and barked as loudly as he could. Perhaps he thought he was giving the bunny an invitation to come up.
But the bunny never answered. They don't bark, but they can make a funny little squeaking sound at times. This one didn't do even that.
"He's gone, Zip! You can't get him," said Russ.
"Bow-wow," answered the dog, almost as if he understood what Russ said, and as though he answered: