According to dog behaviorist Nick Jones, MA, “changes in the dog’s routine may lead to the dog being unsettled for a while. These might include a change in the owners’ working routine or new and quite different rules being put in place. Generally speaking, I would expect to see a dog eat less if it were in a depressed state.”

Nevertheless, animal experts say that animals generally develop certain mental disorders when they aren’t treated properly. If you notice these signs of depression in your pet, you should talk to your vet as soon as possible. Once you have found the triggers, it’s your responsibility to try your best to eliminate them and provide your pet with a healthy environment.

To help you better understand this phenomenon that can occur in your dog, here are 10 Human Mental Disorders You Had No Idea Could Affect Your Pet Too.