Feline at nine

"English is best, you can take it from me!"
Declared a cat named One-Two-Three.
To prove that it should be the case
He challenged another to a race.
The other cat, named Un-Deux-Trois
Thought his language should be the law
And to show the might of his dear Français
He and his opponent, one fine day,
From England to France, both tried to swim.
In such a race, now, who should win?
One-Two-Three had French to thank
For un deux trois quatre cinq.