The bad kitty had an unfortunate, nocturnal fondness for crawling through a neighbor’s open window.

Which irked the neighbor mightily.

And on Oct. 25, kitty’s nighttime proclivities spilled over into open conflict between its owner and the ticked-off neighbor in a nearby apartment in the 500 block of 37th Street Southeast.

Auburn police offer the following rundown.

Between 9:50 p.m. and 10 p.m. Oct. 25, at an apartment in the 500 block of 37th Street Southeast, the fed-up neighbor, hereinafter known as “the suspect,” then intent on returning the wayward puss to its owner after yet another unwlecome appearance, opened the owner’s door.

And tossed in kitty.

But in so doing, the apartment door momentarily bumped into the cat owner’s leg.

The cat owner promptly called police, complaining of pain.

“The victim first did not know if she was injured. And then she said her knee hurt. No medical care (was required) and (there were) no visible marks or injuries,” said Auburn Police Cmdr. Mike Hirman.

“These two neighbors apparently do not get along, and, however this relationship manifested itself, they have not figured out how to smooth things by themselves,” said Hirman.

No threats preceded the incident, and to date, there has been no additional cat tossing.

Hirman said the case filed has been forwarded to the prosecutor, but added, “somehow I doubt charges will be filed.”

As for the make of the cat, and its age, Hirman had nothing to add.

“That part is unknown, but [the cat] obviously prefers the neighbor,” Hirman said.

There were no witnesses.