why dogs bark at delivery drivers

A delivery driver may be at your door for less than a minute. To your dog, that short visit can feel like a major event: a stranger approaches the home, makes noise, drops something near the entrance, and disappears. That last part matters. Many dogs bark because, from their point of view, the barking appears to work. The stranger comes close, the dog sounds the alarm, and the stranger leaves. Th.. ดูเพิ่ม