Perhaps...
The Kid himself swept aside Andy's uncertainties.

Adeline, the cat, came out of the stable and looked at them contemplatively.

Adeline still had the string tied to her tail, and a wisp of paper tied to the string.

The Kid pounced and caught her by the middle.
"I guess I can tie knots so they stay, by cripes!" he shouted vaingloriously.

"I guess Happy Jack can't tie strings any better 'n me, can he?
Nice kitty--c'm back here, you son-a-gun!" Adeline had not worried over the absence of the Kid, but his hilarious arrival seemed to worry her considerably.