There is one that stuck with me since I was a kid. A guy went to bed with his dog by his side. When in the middle of the night he heard a sound and put his hand out to see if the dog was still there. He got a lick in reply. Knowing everything was okay he went back to sleep. In the morning he woke up to see that his dog was murdered and writen in the dogs blood was "Human lick as good as dogs".
Edit: after reading further down the page I realised it was already here and called "the licked hand"