When it’s kitten season and cats may be noisily mating outside and marking their territory, your cat may feel the need to express their territorial behavior by sleeping in the litter box – after all, cats mark with their urine and the familiar smell of their box will help them feel more secure.
Conclusion. Sleeping in the litter box is not considered normal feline behavior and could be a sign that something is wrong. If there isn’t an easily identifiable trigger, it’s a good idea to take your cat to your vet for a check-up.
The small size of the litter box may make her feel cozy and safe, so she may choose to sleep there until she is more comfortable in her new, more spacious environment.
Set aside a box with a thick, fluffy blanket so the kitten can hide when she’s feeling a little shy or insecure. Place a padded, washable cat bed in a quiet area away from the food, water, and litter box areas.