Cats sleep an average of 12-20 hours per day due to their evolutionary heritage as crepuscular predators, their unique protein-dependent metabolism that requires extended recovery, and their instinctive energy conservation patterns. This behavior is normal but changes in sleep patterns can signal health issues.
Your cat's extensive sleep schedule is not laziness—it's evolutionary biology in action. The 12-20 hours of daily sleep is essential for maintaining their energy for hunting (even if "hunting" means pouncing on catnip mice). Trust your cat's instincts, but monitor for sudden changes. A healthy adult cat should have a recognizable sleep pattern. If yours suddenly starts sleeping far more or less than usual, or shows other behavioral changes, a veterinary checkup is warranted. Otherwise, let your feline friend snooze in peace—they're just being cats.