I have no idea why this was happening, but it seems like a fun place to work.
My wife sent me this video. The YouTube description states it occurred last year at headquarters of Groupon in Chicago. That description also says that this is a baby tyrannosaurus, but I think it is supposed to be a velociraptor traipsing around the lobby of the building.
For a few seconds I wondered what was happening. The roar sounded real to me. The head moved realistically. Then I noticed the legs.
Even then it was fun to watch, and most everyone seemed to enjoy the dino, except maybe the woman coming out of the elevator.