Actually, it's normally used for humans, to analyze their gait so you can prescribe things like insoles or shoes.

However, I don't think you want to go buy an expensive measuring device just for your dog ;-)

Pounce Pounce Revolution?

I'm pretty convinced I could get the dog to use an iPad. I wonder if there is a simple iPad soundboard app.

For what it's worth, I had a golden retriever who liked to toot the horn of a little Fisher-Price train, so I bet a sound board would work. He always used his nose, which I think would be more likely to work on an iPad screen than paws.

I wonder if resistive touch screens are good enough for a dog nose, or I have to go with a full capacitative screen.

(Our puppy will nose, poke, paw, and bite things that I point at in order to get treats. Should be pretty easy to train...)