Upon losing battles, apes will tend to masturbate. Male boars excite females by breathing on their faces. In the animal kingdom, chimpanzees hold the record for the fastest quickies. Sexual intercourse can last as little as three seconds. Slugs can fertilize their own eggs.
Most giraffes are bisexual.
Billy goats urinate on their own heads to smell more attractive to females. The Aplysia californica or sea hare, which resemble slugs more than they do snails, are found around West Coast beaches where they eat so much seaweed that they can weigh up to 15 pounds and reach two feet in length. The only other activity that they are known to do other than eating is copulating. Pigs and hogs have corkscrew-shaped penises. One researcher at the University of Miami has witnessed as many as 10 sea slugs at a time engaging in chain copulating.