What It Means When Old Cat Changes Behavior. As explained by the journal of feline medicine and surgery, this means your cat may experience cognitive decline. Is the side too high for my elderly cat;

Behavior changes in the urination and defecation habits of your cat are most often related to stress, fear, or a lack of appropriate, clean, litter box options. Some cats like to butt their heads against your hand or face to ask for attention or head scratches. This is a welcome change in female cat behavior after spaying.