Will my dog remember me after 5 years?
So even if your face has changed or its been years since you've last seen your dog, your doggo will remember how you smelled, remember how you loved them, and will be super excited to see you've returned!
How traumatic is it for a dog to change owners?
In general, re-homing is a very stressful experience for dogs. It's common for dogs to undergo bouts of depression and anxiety, especially if they're coming from a happy home. They will miss their old owner and may not want to do much at all in their sadness over leaving.