At least she can defend her house from the garbage man and delivery people when she's inside!
Are you as amused by Chelsea's howl as much as I've been by some of my dogs' howls? Some howls are so darned cute. For example, Boomer the chi, Pepsi the JRT, and Tango the poodle. You don't think of those breeds as dogs which howl, and they didn't all that often, but it was so interesting, or cute (in Boomer's case.) when they did. They weren't howling out of fear, something just triggered it in them.
Yes, familiar cars...their ears pick them up, and definitely do not mix up the motors for those from other cars/trucks.
Love All Life, Thank You For Posting! :)