He had forgotten about the dog.
He had been wondering if Betty had gone to bed, or whether she was in the sitting room, reading, as she was accustomed to doing.

A light came through the sitting room door, and Calumet had been watching it, momentarily expecting to see Betty's shadow.

"What's that ?" he repeated.

"You like him, anyway?
Why ?" "Because you gave him to me," said Bob, blushing at the admission.
Calumet looked at him, sourly at first; and then, with a crafty grin on his face as he watched the sitting room door, he raised his voice so that if Betty were in the sitting room she could not help hearing it.
"Well," he said, "you like him because I gave him to you, eh?
Shucks.
I reckon that ain't the reason Betty likes him." Apparently Bob had no answer to make to this, for he kept silent.

But Calumet saw a shadow cross the sitting room floor, and presently he heard a light footstep on the stairs.