In order to tell if your dog is depressed, pay close attention to how he acts. Any sudden changes in behavior or mood could be a sign that there’s something wrong. But there are specific things you can look for in your dog’s behavior that almost definitely indicate depression. And if it’s not depression, it’s still a problem that must be addressed.
I have long studied the topic of depression in dogs. It turned out that dogs can constantly bark or be silent, but at the same time refuse to eat. These are complex creatures, just like humans. And the approach to each dog should be individual.