Abrams heard a car pull up outside and beep as the doors locked, so he started barking as he thought someone was coming to the door (they went to my neighbors). Which was fine and totally appropriate. But while Abrams was barking - Cynder started barking, too. In the house.
This is a dog that NEVER used to make any noise at all, let alone alert bark. I have known her for almost three years and she has NEVER barked in the house. Ever.
And they say old dogs can't learn new tricks. (Or maybe its a bad habit? LOL)