Great!! See what your dog does!
Well I was looking for that sound on the computer that got the dogs going crazy, but I couldn't find it. Well, I have this song, some of you may know it, its a joke-type song called "Half Fling" (Halfling). By Dominic Monaghan and Elijah Wood I belive. Anyway, its screechy sounds and Major was a bit curious when I put it on. I played it a couple more times and he didn't respond to it though.
That got me thinking. I found this site here, and it has the sound of a groundhog, and I put it on and Major started barking and barking, it was hilarious! Hopefully this link will work if you want to try it. :p
http://www.marmotburrow.ucla.edu/sounds/woodchuck.aiff
You can try this one too, its a Prairie Dog.
http://www.desertusa.com/dec96/pd-4.mov
