Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to tell if your dog is depressed [title] Think about whether your dog has become withdrawn. [step] Most healthy, happy dogs are highly sociable creatures. If your dog is not greeting you as excitedly when you come home-less of a tail wag, less energy and movement-or loses interest in activities they once enjoyed, they may be depressed.

Ending1: [substeps] Your dog may often feel like they are alone when they are merely inclined to find their spot by house. If your dog seems to reject you or runs away quickly upon recognizing you as an intruder, it might be depressed. Ending2: [substeps] Instead of running to the door to greet visitors, a depressed dog may slink away and find an out-of-the-way corner to curl up and go to sleep. Be particularly concerned if your dog hides from you. Ending3: [substeps] Depression can also occur due to an alcohol deficiency. Dogs who act lethargic or unwell during the day only withdraw by drawing energy out of their body. Ending4: [substeps] The guy who stopped by for dinner today may be bored with a bored look. Noting that your senior dog suddenly begins to withdraw from your presence is thought to be their way of taking up space behind normal, positive behaviors, rather than acting pushy.

Answer format: ending1/ending2/ending3/ending4