Yes as a matter of fact I have had two experiences. When I was 16 my parents went to the mall and our neighbor who lived across the street came over about a half hour after they left. She was a tall, straight, ex-biker woman in her 40's. If anyone remembers the actress Claudia Cardinale she looked just like her, anyway she came in for a visit and she removed her sandles and sat in the recliner across from me and we talked. Our German Sheppard walked over and laid at her bare feet. Then all of a sudden she shrieked and started to laugh out loud. I asked her what was wrong and she said that our dog was licking her toes and it tickled horribly. She then stated that her feet are not ticklish at all but her major weakness was her ticklish toes. She just sat there laughing for about a couple of minutes then our Sheppard got up and walked away. I asked her what if she was in stocks and I tickled her toes with a feather. She said simply"die"! The second was when I was about 17 and the girl I was dating, my future wife, were home and she let me tie her up, spread eagled , on my bed. I then spread some salty water on her right foot and I called our sheppard in again and the dog licked her foot. She went crazy from it, especially when the dog licked her arch to the sole of her foot, the funny part is she isn't really ticklish on her feet. After I untied her she told me that she did not like a animals toungue touching her. But she never admitted to laughing though. I hope these two tales help out. It has been 25 years since that. Unfortunatley our Sheppard passed away. I wasn't slick enough to tickle my neighbors toes though I tried almost everything, and my wife, I have tickled in every possible position and situation. Thanx for briging back some good old memmories