Why does my dog bark at the doorbell?

Why does your dog start barking before you've even opened the front door? In this episode, Scott Sheaffer explains how the doorbell can become a learned signal for an encounter that feels threatening. He distinguishes ordinary alert or excited barking from fear-driven territorial aggression and explains why, in that pattern, the dog is seeking personal safety rather than protecting owners or property. Scott also explores how repeated barking at passersby through a window can strengthen the be...