Our indoor cat's (Rory) 4 kittens (Snow White, Blessing, Precious, and Jack)are 5 days old. Twice today she's removed one of her kittens from the box and hidden or abandoned it in another room or closet of the house (a different kitten each time). Luckily we've been able to find them and return them to the rest of the litter. The momma seems accepting and nuturing of the kittens each time we've retuned them. Is this normal? What's going on here? Thanks.