Last night, some stray cats in my neighborhood were fighting and shouting at each other, and running around on the roof of the house next door.
Each haiku should have a seasonal word, which was called a "kigo" (季語).
"A cat in love" (恋猫) is one of the seasonal words of spring. In spring, tomcats fight over mates.
Shuson Kato, who is a famous modern haiku poet, wrote a haiku about a cat in love:
A cat in love
Licks a dish at once
And goes calling
I'm wondering if I will also hear cats in love calling tonight.
A cat in love is
The dark night