Outside is a big one here..they all run to the door, bark like crazy and turn in circle until the door opens. Treats, is another that will cause a stampede to the kitchen. In the evening, I can say, "lets lay down" and they all run and jump on the couch and wait for me to snuggle. As far as barking..wew, we are working on this...we moved into an apartment over our office 3 years ago and own a Self Storage facility...so, we have alot of traffic. They lay in the window that overlooks the main gate. They will bark everytime a new customer comes in..funny, they know the customers vehicles that have been here awhile