Love affair with litter box

by pat skyler
(west sacramento, ca)

Siamese Cat Picture

I am fostering a 1 year old female Siamese who seems to have this love affair/fetish with her litter box at night. I keep it very clean, but 5 or 6 times a night she goes inside of it (covered or uncovered) and scratches away for about 2-3 minutes.

I have had her checked for urinary tract infection plus all the regular blood tests and her tests come out just fine. Has anyone else ever encountered this type of behavior. She is very good about using her box, but this behavior is keeping me up at night.

I know I could move her to another room, but would rather find out why she is acting out this way.

Thanks for any input.
Pat