Here is a look at my latest Halloween prop for this year the Graveyard Dog. I was originally just going to set a shaking pair of eyes in the dog house, those ones you put in the bushes, but luckily my wife challenged me to do something more so this is what I came up with. The video shows the mechanism I came up with to get the movement using a wiper motor. Let me know what you think!!!
And of course thanks to my best little helper!!!
Eerie Acres Cemetery 
Wish i could see the video, but only get unresponsive script warning. The prop looks great though. Will be scarring all who come to the cemetery. muahahaha.
Thanks! Not sure why the video doesnt work for you? Is it still not working? It should just play as soon as you hit the button directly from youtube?