Sometimes I think it's not a bad thing to have a dog bark when someone
knocks or rings the doorbell. The police say that 'bad guys" often knock on
a door just to see if anyone is home when they are checking out a place to
break into. A dog (no matter the size) is a big deterrent.

Smokey never used to bark when he was younger but, he sure does now
and so does Maggie.