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.
There was one point at which Grumps stopped short, however, and ceased to follow his friend, and that was when he rushed headlong into the lake and disported himself for an hour at a time in its cool waters.
Crusoe was, both by nature and training, a splendid water-dog.

Grumps, on the contrary, held water in abhorrence; so he sat on the shore of the lake disconsolate when his friend was bathing, and waited till he came out.