1. When the litter box is too dirty, the cat will not defecate in it, and the owner needs to clean the litter box in time.
2. When the owner moves the litter box, the cat feels uncomfortable and will not defecate in the litter box. 
3. When a cat is in heat, it will urinate everywhere in an attempt to attract a mate. You can wait until the heat cycle is over and then have your cat spayed or neutered.
4. If the cat litter has a strong odor or the granules are too large, the cat may not like it and will defecate elsewhere, requiring the replacement of the cat litter.
5. When a cat develops a urinary tract infection or enteritis, it will lose control of its urination and defecation, and needs to be taken to a veterinary hospital for examination and treatment in a timely manner.
