There are many factors that may affect your dog’s sleep like illness, moving to a new home, loss of a family pet, new family member, and even things like fireworks and loud noises. Dogs that are noise sensitive may react to thunder, fireworks, and unexpected noises by hiding, cowering, shivering, and not sleeping.
Research demonstrates that other factors that may affect your dog’s quality of sleep. “Other factors that appear to influence sleep in dogs include diet and frequency of feeding, changes in housing conditions changes in working routine, and activity levels during the day.
Dogs who received more social interactions with humans and other dogs and spent more time walking had shorter latencies to their first sleep bout and spent more time in quiet sleep than dogs that were less active during the day.
Furthermore, sleep patterns also correlate with age, such that older dogs tend to sleep more during the day and night, but their sleep is more fragmented (which is reflected in more, but shorter, sleep bouts), particularly throughout the day,” via Plos One.
Today, current research together highlights that sleep in dogs is sensitive to the environment, as in other human and non-human animals. Hence, individual differences in sleep patterns may reflect different degrees of adaptation and welfare. Researchers also warn pet parents to look out for lethargy in dogs. This may be due to depression.