The owner of two neutered male cats was speechless when new kittens suddenly appeared in her house. How did that happen?

Amy, who shared her confusion in a video, achieved incredible viral success out of the perplexing situation.

The kittens in her house caused great astonishment, as her two kitties are male and neutered, as she shared in the clip.

As there is no female cat in the family, she could not understand where the two kittens came from.

Dogs Dog tragically dies just seconds after appearing in cheerful clip – here's what happened

One looked like her two male cats – all black – while the other was orange in color.

While the latter remained sitting in the corner and seemed a little shy, the black kitten seemed more adventurous, running around and exploring the house.

In the video, Amy's cats both looked up at her with wide eyes. Their meowing seemed to confirm that they, too, had no explanation for the little kittens' origins!

In a follow-up video, Amy finally presented the solution to the riddle. The little kittens belonged to her neighbor – and whenever she returned them, they always came back to her a short time later.

Incidentally, the neighbor has since promised to do better and will keep a closer eye on the kittens and their mom from now on.