My dog purrs like a cat, and I have cat that will roll over and beg to have his tummy rubbed. One of our former cats used to lick bars of soap. My former Siamese would play fetch for hours with twisted up pipe cleaners. She also swallowed down about a foot and a half of a string attached to a toy we made for them. Luckily, we caught her and were able to get it out or that could have ended very badly! I always did wonder what she would have done when she got to the pipe cleaner "spider" on the end of that string! One of my youngest daughter's rats used to climb all over the cats and they let her. Hmm, I'm sure there were other crazy animals, but those are the ones I can think of right now...