Ah, sex. Birds do it, bees do it. Wait a minute! How exactly do they do it? The mating rituals of some animals are wonderfully bizarre. For example: did you know that some insects’ genitals explode during sex? Or that some fish can change gender?

Intrigued? Read on for  the most bizarre animal mating habits.

Honey Bee: Exploding Testicles.

The reproductive cycle of bees is fascinating – and complex. But here’s the short story: a queen is selectively bred in a special "queen cell" in the hive and fed royal jelly by worker bees to induce her to become sexually mature.

A virgin queen that survives to adulthood without being killed by her rivals will take a mating flight with a dozen or so male drones (out of tens of thousands eligible bachelors in the colony). But don’t call these drones lucky because during mating, their genitals explode and snap off inside the queen!

Strange as it is, this actually makes evolutionary sense: the snapped-off penis acts as a genital plug to prevent other drones from fertilizing the queen. But tell that to the dead drone whose penis just exploded.

[Note: this strategy is so successful that it is apparently employed by other species of animals, such as the male wasp spider.

Bonobo: Make Love Not War

Who said that violence is the only way to solve fights over food or territory? Instead of fighting,bonobos have sex! Actually, their whole societal structure seems to revolve around sex.

Bonobos use sex as greetings, a mean of solving disputes, making up for fights, and as a favors in exchange for food. They tongue kiss, engage in oral sex, mutual masturbations, have face-to-face genital sex and even have a strange "penis fencing" ritual!

In their 1996 book titled Demonic Males: Apes and the Origins of Human Violence, Richard Wrangham and Dale Peterson wrote:

"Chimpanzees and Bonobos both evolved from the same ancestor that gave rise to humans, and yet the Bonobo is one of the most peaceful, unaggressive species of mammals living on the earth today. They have evolved ways to reduce violence that permeate their entire society. They show us that the evolutionary dance of violence is not inexorable".

 

Flatworm: Make Love AND War.

If bonobos "penis fence" as foreplay, flatworms do it for real.

For flatworms, sex is more like war than love. Like all sea slugs, flatworms are hermaphrodites (they have both male and female sexual organs). In this case, the male organ turns out to be two dagger-like penises that they use to hunt as well as mate. During mating, two flatworms fight (i.e. "penis fence") to stab each other, while avoiding getting stabed.

The "loser" who gets stabbed will absorb the sperm through its skin and then scoots off to bear the burden of motherhood!

Red-Sided Garter Snake

Strange Fact 1. The annual mating of red-sided garter snakes is a tourist attraction in Manitoba, Canada. That’s because when a female garter snake emerges from hibernation, she releases a pheromone that attracts hundreds of male snakes in the vicinity to rush her and create a large squirming "mating ball."

Strange Fact 2. Like many snakes, the male garter snake has two penises, called "hemipenes," on each side of its body. The male will try to use the best-positioned penis to mate with the female in the center of the mating ball.

Strange Fact 3. As if the two facts above aren’t strange enough, turns out there is a "she-male" snake who releases pheromones just like the females do (and fools hundreds of other males to pile up on him/her). Why? Scientists think that this gives the she-male warmth and protection.

Bonus: From Current Science:

The annual red-garter mating balls are a big tourist attraction in Manitoba—and a source of many tales. One unsuspecting couple built a house on top of an empty snake pit one summer, only to find their property swarmed by thousands of red-sided garters returning to their traditional hibernation den in the fall. The couple quickly relocated their new house. 

 

Hyena

Female hyenas wear the pants in the family. They’re bigger and stronger than the males. And definitely much more aggressive. Heck, they even got balls. Really.

A female hyena has a pseudopenis, basically an enlarged clitoris, that they can erect at will. To mate, the meeker male has to insert his penis into her pseudopenis. That’s difficult for the males, but still nothing compared to the female having to give birth through a penis!

Biologist Laurence Frank describes something else that is strange about hyenas – the way they say hello to each other:

After being separated for a few hours, spotted hyenas engage in "greeting" displays that entail lifting their legs and exposing their erect pseudopenises for inspection. Subordinate females often initiate greetings and this is the only known case of an erection being a submissive gesture. "This unusual display is not without its risks [because] each hyena puts its reproductive organs in immediate proximity to very powerful jaws," says Frank. "On the rare occasions when the aggression escalates to fighting, the resulting damage may be severe enough to destroy or seriously compromise the reproductive competence of the injured party.

Emperor Penguin

Emperor Penguins, the subject of the popular 2005 documentary March of the Penguins, have a strange “marriage”. Penguin couples spend their lives apart from each other and meet once a year in late March, after traveling as far as 70 miles (112 km) inland – on foot or sliding on their bellies! – to reach the breeding site.

Once there, penguins look for their mates by making a bugling call. Male penguins generally stay in one place, lower their head to their chest and call out to the females. Once they find one another, they would stand breast to breast, repeatedly bow to each other and sing (okay, “bugle”).

Now, onto the mating itself: Like in most birds, penguins have no external genitalia. That’s right, male penguins don’t have penises and the females don’t have vaginas. The male’s sperm is produced in the testes and stored in his cloaca (kind of an all purpose orifice for defecating, urinating, and reproduction). The female also has a cloaca that leads to the ovaries. The female penguin lies flat on the ground and the male penguin presses his cloaca onto hers and passes the sperms through.

Once the egg is laid, the female Emperor Penguin transfers it very carefully to her mate (if the egg touches the ice, it would freeze and die), who then keeps the egg warm by tucking it under a large fold of skin until it hatches. The female penguin immediately returns to the sea to feed, leaving the male without food for about two months. The male penguins would huddle together in large groups to conserve body heat in the cold and harsh environment, where winds can reach up to 120 mph (200 km per hour). When the female returns, she finds her mate (and chick) by listening to one particular bugle over thousands other.

When it was released, March of the Penguins sparked a controversy when the Christian right claimed it as a parable of monogamy amongst other things. Turns out, Emperor Penguins are serially monogamous – meaning that for that breeding season, they only have one mate. However, if they can’t find one another the next season (and most can’t – only about 15% of pairs find each other in subsequent year, and just 5% in the third year) they will choose new mates.

Dolphin

Here’s something you probably don’t know about Flipper: he has retractable penis. And if that’s not cool enough, here’s something else: his penis is prehensile. And it swivels. In fact, a male dolphin can use his penis to explore objects just like a hand.

Male dolphins also have a very strong sex drive. It can mate many, many times in a day. Now here’s the bad news: male dolphins aren’t that much of a stud. The average time to ejaculation? 12 seconds.

Another hushed-up fact is that male dolphins have a ravenous sexual appetite: they often try to hump inanimate objects and even other animals like sea turtles. When a pack of male dolphins happen upon a female, often times they will attempt to force her to mate.