Dogs can experience depression just like humans, and it's important for pet owners to recognize the signs in order to help their furry friends feel better. Symptoms of depression in dogs may include ignoring playtime, losing interest in activities they used to enjoy, refusing food, sleeping more than usual, spending more time inside, showing sudden aggression, and exhibiting changes in behavior and demeanor. There are several reasons why dogs may become depressed, including the loss of a loved one, lack of exercise and mental stimulation, boredom, loneliness, and physical issues. To effectively treat depression in dogs, it's important to address the root cause of the issue. This may involve providing more exercise and mental stimulation, addressing any negative life changes, addressing physical issues, and ensuring that your dog has socialization and companionship.