The reasons why cats lie down outside the cat litter:

1. Cats like it. Some cats like to play and sleep in the litter box, so they may also like to lie down and play near the litter box.

2. The cat was frightened. The litter box is a safe area for cats. When cats feel insecure or frightened, they will lie down near a familiar place.

3. Cat’s possessiveness. If there are multiple cats at home at the same time, the cats will guard the litter box for fear that other cats will occupy their litter box.

4. The cat’s activity space is relatively small. If a cat lives in a cage and the living space is relatively compact and has no place to lie down, he will lie down in the cat litter or near the litter box.

5. The cat is sick. When a cat urinates and defecates frequently, the cat will lie outside the cat litter to facilitate its own excretion. This situation is usually caused by the cat being sick.