There's a great deal of hidden significance in the fact that just one of the cats is scratched out.
7 seconds sound clip from Batman (1966) - The Purr-fect Crime (S1E19) TV Series.
You can hear this line at 00:04:55 in the Blu-ray version of the movie.
Quote context
[...]
- And we believe this is just the first of the planned robbery.
- Good thinking, commissioner.
- Obviously, the Catwoman would not be satisfied with only this.
- No, I'm certain this only the first stitch in the large tapestry of crime.
- There's a great deal of hidden significance in the fact that just one of the cats is scratched out.
- Gosh, I wish Mark Andrews, was here. I bet he could give us some more info.
- What a thrill this is, Batman. I've followed your exploits for years. Nice meeting you too, Robin.
[...]