Vacuum noise hurts sensitive dog ears or sounds threatening, causing fear reactions.
The fast unpredictable movement of vacuums can trigger dog's chase instincts.
Movement Triggers Instinct
Vacuums look and act unlike anything in nature, seeming scary to dogs.
Dogs not exposed to vacuums as puppies may see it as a novel, scary object.
Lack of Early Exposure
Bad experience like getting tail sucked creates negative feelings about vacuums.
High anxiety dogs have more reactivity and fear of objects like vacuums.
Anxiety Prone Nature
Vacuum comes out when you leave, triggering separation stress.
Possible Separation Anxiety