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For one, many animals that masturbate don't continue the deed until orgasm humans seem to be rather goal-oriented on this point. But since this discharge doesn't seem to occur as often in animals, then there must be some other benefits to the practice, scientists say. However, to collect semen from captive elephants for artificial insemination, zookeepers must manually stimulate a bull's rectum to massage its prostate yep, that means some poor zoo worker has to don a glove and reach up there. Shadle also found that lady porcupines were wont to "seize, straddle, and ride sticks about the cage. The ejaculation could also serve as "postcopulatory urination, as a more thorough mechanism to clean vital reproductive tracts after mating than just external genital grooming. The marine mammals have been known to use their flippers to get the job done, and their mouths for so-called self-fellation. While our shared interest with the animal kingdom highlights some similarities between Homo sapiens and the rest of Earth's fauna, scientists say there are some differences in how we go about it.

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Autoeroticism in both male and female horses is common.

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The reptiles also emit telltale squeaks of pleasure. The ejaculation could also serve as "postcopulatory urination, as a more thorough mechanism to clean vital reproductive tracts after mating than just external genital grooming. Most birds have an opening called a cloaca used for both sexual and waste-excretion purposes. If your bird is masturbating too often, you can often stop the behavior by removing the favored object," Wissman wrote. Marge Wissman on BirdChannel. Waterman of the University of Central Florida found that all 20 of the male squirrels observed masturbated to ejaculation and consumed the ejaculate.

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