Litter boxes are a great indication of your cat’s health. The size and frequency of urination and the smell and color of feces can tell you a lot about the health of your pet. Keeping an eye on your litter box can clue you into your cat’s gut health, level of hydration (or level of dehydration) and even show early signs of urinary tract issues. All too often, cats stop using their litter boxes to the confusion and dismay of their human counterparts. They could be urinating in the sink or tub, defecating in the bed sheets, or going to the bathroom anywhere but the litter box.