Perhaps, the only known creature to use sex not just for reproduction but also for self-gratification is Man. Humans have sex as part of a union between two individuals pleasure plays a big part in sex. Sex enhancing drugs like Viagra or Cialis are now used not only for erectile dysfunction but as an "aid" to get it going for a couple more rounds of sexual activity, people use it as an aphrodisiac. Humans have been known to use aphrodisiacs for hundreds of years and some of the exotic ones are powdered tiger bones and powdered horns of a Bull Rhinoceros. Do you know of any natural Aphrodisiac? and have you tried using it?