I have an 7 yr old male shepherd. We've had him since 3 mons. Over the past year or so, his behavior has changed.. Hes always been a protective dog. But recently started barking when someone comes in the house, leaves the house even if they go up or down the stairs. He doesn't do this to me or anyone else that lives in the house only with someone that is visiting. There have been a few instances where he's even gave someone a little nip but has never fully gone after anyone. He was diagnosed with epilepsy a few years ago and takes medication daily that makes him clumsy and act a little silly. Not sure if that would have anything to do with it but theres nothing i can do to change his meds. Does anyone have suggestions or has anyone experienced this. He was professionally trained as well. Thank you!
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