If your dog is grumpy, forgetful, disoriented, or has difficulty concentrating on listening to instructions, lack of sleep is one of the possible causes. Older dogs are more prone to fatigue than younger ones, but they are also more likely to be woken up. Disturbing factors such as light, noise and stress may also make it difficult for elderly dogs to get enough rest.
* Sleep time in the first week is about 16 hours per day. When puppies were just born, due to less breast milk secretion and the puppies' sucking ability was not high, the time of breastfeeding each time was longer and higher, occupying a certain amount of sleep time for puppies.