It is normal for dogs to sleep all the time during the day because they are generally light sleepers at night, with their ears listening for movement around them and waking up immediately at the sound of a noise. Dogs sleep a lot, most of the time is a light sleep state, a few times will enter a deep sleep. If the dog is very young, then the dog has been sleeping during the day for the normal situation, because the dog is at the peak of growth and development, will need more sleep to develop. Dogs at different ages sleep for different times and aspects are also different, in general, puppies and older dogs sleep more, puppies may sleep for as much as 18 to 20 hours.
