Both of mine do this! They run under there to play and to chew on bully stick/toys. It's so annoying because if they are really interested in something they're chewing they won't come out when I call. I think dh is going to buy some boards to slide under the bed to keep them from going under there because it sure is hard to get them out and the under-the-bed storage boxes aren't big enough to fill the whole space. Little brats!
