Photo: WeHeartIt

Sex feels really, really good. This is just common knowledge.

However, somewhere along the way some well-meaning person said, "Dang, we gotta stop doing it with such reckless abandon. Let's make people feel like lust is a weakness of character, and that sex for reasons other than procreation is something only animals do. Yes, I recognize the irony, as most animals instinctively have sex as a means to propagate their species."

Thank goodness no one is uptight about recreational sex any more. But what about the animals? Well, here are 15 animals who have the kind of libertine sex drives that would put coked-out caveman swingers to shame. 

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