Depression and anxiety are not only present in humans. Symptoms of depression are quite similar that from humans and may include odd sleeping pattern, low interest in food and overall low energy and interest in activities the dog used to enjoy. These are all potential symptoms and need to be checked out by your vet to clear other medical issues.
Causes for a dog to slip in a depression could be change of household, like a new baby, separation or moving into a new home. Another potential cause could be the loss of an owner or a fellow companion. Yes, dogs have emotions too. However, dogs feed off our energy and emotions, so it also possible that the dog is picking up the energy of a mourning person.
Dogs live in the moment and while a dog can show depression, he most likely will bounce back from it after a short period. Take your dog for walk, or thing he pleases to do and praise him for his positive behavior. Avoid too much affection and rewarding your dog when showing depressed behavior.
Anxiety often manifest in forms of obsessive behaviors, barking or chewing. Most common causes of anxiety in dogs may include trauma, separation or lack of socialization. An unbalanced dog is a fearful dog, which seem comparable to certain social and attachment anxiety disorders in humans.
Fear and impulse control disorders that can lead to aggression in both humans and dogs.