Simple answer: Your cat finds it fun to play in the litter box. It's not
unheard of. If using the litter box for its intended purpose is
enjoyable to him, and there's not much else around that's as stimulating
to him, he's gonna go play where he likes to be. Prob'ly likes the feel
of the litter, the way kids like playing in a sandbox.

Try making it less attractive to him as a playground. Put it in a
secluded area well away from his food, water and regular living area.
Give him plenty of different toys, put far away from his litter box.

Less expensive would be to get a covered litter box, making it not so
attractive to play in.

It's not a defect in your cat. Like people, they can simply get amused
by the oddest things.

On Feb 5, 8:45 pm, jason.bernard...@gmail.com wrote:

Playing is one thing....but from personal experience I would advise
that
if you havea cat who suddenly *lies*down in litterbox and stays there
- not playing - I would take him to a vet ASAP to check for illness. I
don't understand this behavior but have seen it time and again.