Here's a side view shot of the dog house with the side removed.  The dog actuator and sound modules are all accessable through the back of the dog house.  In this photo, we're taking the dog house apart after Halloween. Notice the motion control module, the sound module, and the speakers.  We fastened the actuator to the ground with rebar, and weighted the whole rig with cinder blocks to keep it from moving around and working itself loose when it fires.

Here's Fifi out of his dog house.  The frame the actuator is built on is made from aluminum stock.