On the way to the forum yesterday, A while ago I started to rebuild a small table drill press ,I disassembled it ,checked and cleaned the parts . and,found no worn parts . I left the parts in a box on the work bench. I was out in the garage for the first in a while so i rechecked some parts, picked up a shaft with a bearing on one end and spun the bearing.the dog ( who was sleeping on the garage concrete apron ) came running and jumped on me.I waited till she went back to guard duty an I spun the bearing same response. Let her go back and i put two drops of oil on the bearing and spun it no dog maybe found a new diagnosis engineer for dry bearings bob w.
Dogs can hear much higher pitched sounds than humans, true.
Was this about 10:15 yesterday morning?