@catsalad our cat ignores them. our dogs gets confused - what is that rumbling and why did the wine bottles tip themselves over? as an adult only one has made me concerned enough to do something. i was at the theater with my ~9yo daughter. at first i thought someone bumped into the projector then realized "earthquake. big." picked up my daughter and started to the exit. the quake stopped by the time we got to the exit door. everyone kinda stood there for a beat then went back and sat down. they rewound a few minutes back and the show went on. my daughter remembers the movie (burton's alice in wonderland) but not the earthquake.