At this point in the conversation a little dog with a lame leg hobbled to the edge of the rocks in front of the spot where Dick was seated, and looked down into the water, which was deep there. Whether it did so for the purpose of admiring its very plain visage in the liquid mirror, or finding out what was going on among the fish, we cannot say, as it never told us; but at that moment a big, clumsy, savage-looking dog rushed out from the neighbouring thicket and began to worry it. "Punish him, Crusoe," said Dick quickly. Crusoe made one bound that a lion might have been proud of, and seizing the aggressor by the back, lifted him off his legs and held him, howling, in the air--at the same time casting a look towards his master for further instructions. "Pitch him in," said Dick, making a sign with his hand. Crusoe turned and quietly dropped the dog into the lake. Having regarded his struggles there for a few moments with grave severity of countenance, he walked slowly back and sat down beside his master. The little dog made good its retreat as fast as three legs would carry it; and the surly dog, having swum ashore, retired sulkily, with his tail very much between his legs. Little wonder, then, that Crusoe was beloved by great and small among the well-disposed of the canine tribe of the Mustang Valley. But Crusoe was not a mere machine. When not actively engaged in Dick Varley's service, he busied himself with private little matters of his own. He undertook modest little excursions into the woods or along the margin of the lake, sometimes alone, but more frequently with a little friend whose whole heart and being seemed to be swallowed up in admiration of his big companion. Whether Crusoe botanized or geologized on these excursions we will not venture to say. Assuredly he seemed as though he did both, for he poked his nose into every bush and tuft of moss, and turned over the stones, and dug holes in the ground--and, in short, if he did not understand these sciences, he behaved very much as if he did. Certainly he knew as much about them as many of the human species do. In these walks he never took the slightest notice of Grumps (that was the little dog's name), but Grumps made up for this by taking excessive notice of him. When Crusoe stopped, Grumps stopped and sat down to look at him. When Crusoe trotted on, Grumps trotted on too. When Crusoe examined a bush, Grumps sat down to watch him; and when he dug a hole, Grumps looked into it to see what was there. Grumps never helped him; his sole delight was in looking on. They didn't converse much, these two dogs. To be in each other's company seemed to be happiness enough--at least Grumps thought so.