Cats poop on the floor for several common reasons, including medical issues, stress or anxiety, litter box problems, or age-related challenges. Medical reasons involve conditions like constipation, diarrhea, inflammatory bowel disease, urinary tract infections, arthritis, or other health problems causing discomfort or pain during defecation. Stressful changes in the cat's environment, new pets, or disruptions can lead to anxiety and litter box avoidance. Cats are also sensitive to their litter box being dirty, having an unpleasant type of litter, or an inconvenient location. Older cats may have mobility or cognitive issues making it hard to use the litter box. Sometimes cats associate pain or discomfort with the box, causing them to avoid it. To resolve this, it is best to have the cat checked by a vet to rule out health issues, keep the litter box very clean, choose a suitable litter and easy-to- access location, and maintain a calm, stable environment.