Yes, dogs are generally sleepy at night, and adult dogs typically sleep for a significant portion of the nighttime hours.
Dogs, like humans, have sleep patterns, although they differ slightly. Adult dogs usually sleep between 60% and 80% of the time between 8 p.m. and 8 a.m., although this can depend on their environment and the schedule of their owners. Puppies, on the other hand, may need more frequent naps throughout the day and night, so their nighttime sleep might be broken up more. Even adult dogs supplement their nighttime sleep with daytime naps, potentially sleeping up to 37% of the day. Therefore, while dogs do sleep at night, they also sleep during the day. How sleepy they appear at night is partly determined by their daily activity levels and overall health.
