The signs that a cat poops on the bed are:
It could be because the owner refuses to let it go to places it used to frequent. When the cat is young, the owner might let it sleep on the bed, but as it grows older, they might prevent it from doing so. The cat might then use this behavior to mark its territory by defecating on the bed. Another possibility is that the cat dislikes the smell or odor of the litter box. Cats are very sensitive and stubborn; even slight changes can cause them psychological stress. It could also be a form of revenge; a cat defecating on the bed could be due to a dirty litter box or hormonal imbalances. 
Here are some ways to prevent your cat from pooping on the bed:
If a cat senses that its owner has been neglecting it, ignoring it, or has lost their temper with it, it may defecate on the bed as a form of revenge.
1. It is recommended that the owner pay more attention to the cat, spend more time with the cat, and give the cat some of its favorite treats. As long as the cat's desire for revenge is countered, it will stop pooping on the bed.
2. Litter box not cleaned in time: If the owner doesn't clean the litter box for the cat in a timely manner, the cat may choose to defecate on the bed to remind the owner to clean the litter box. In this case, the owner only needs to remember to clean the litter box for the cat on time every day, which will allow the cat to return to a normal sleeping environment.
3. The litter box placement or the litter doesn't suit the cat's preference. Cats prefer to defecate in well-ventilated, quiet, soft, dry, and clean places. If you've changed the placement of the litter box or the litter, the cat might suddenly start defecating on the bed. In this case, the owner can adjust the litter box's location, switch to softer litter, and train the cat not to defecate on the bed.
