I have an almost 10 year old yorkshire terrier named Bamse. He is a sweet dog, very friendly and loving. He barks and barks at strangers, but would never in his life bite someone. The weird thing is while he's never been neutered, not once have I seen him hump anything his life! Sometimes I sit and wonder what it must be like for a dog to be so old and never experience the joys of sex. Then I remember how nice it is that he doesn't hump people or my pillows. He does like to give himself a nice licking, though. Maybe that's why he doesn't need to hump. A dog's life, indeed!