On the ride home from the dojo tonight, my buddy said his dog helped him find the kyusho portion of yonkyo. He just started aikido recently. One night we started training yonkyo and he immediately recognized the kyusho application because his dog sometimes clamps his mouth around my friends arm and takes him to the ground in what is basically yonkyo...with the pressure point application. He has a giant sheepdog.
My dog does that too. She also has thrown me several times using kote gaeshi - including applying the kyusho point near the little finger!