Who doesn't like some alone time now and then?

The fun doesnt always have to happen when you are having sex, everyone knows you can have fun all by yourself.  There are an array of animals other than humans that have been recorded masturbating (yup thats right, some creepy scientist watched them while they were....... you know). Some examples are the male marine iguana, the male red deer along with many primates, but the big difference between primates and the first two, is the lady primates do it too!  Some examples are: the sooty mangabey (from West Africa), orangutans (which even make "sex toys" out of twigs and leaves) and the chimpanzee.  One female chimp raised in a human house was seen masturbating to pictures of naked men in a copy of Playgirl.  Any single guys out there?