But those extra two heads aren’t there just to show off. During copulation, echidna penises operate on a part-time schedule: half the penis temporarily shuts down while the other two heads are responsible for fertilization. Or so it seems for the echidna, a spiny egg-laying mammal, which has evolved a four-headed penis.
Here are eight penises that are as cool and surprising as the creatures that wield them: Heads Above the RestĮchidnas have a four-headed penis, though only two heads are put to use at a time. These blurred lines often give rise to nature's most fascinating sexual organs. “There's not a binary that is categorically one thing or the other when it comes to genitalia,” says Willingham. Many of the creatures packing the most surprising phalluses are hermaphrodites, meaning they also have female reproductive organs. Gender and sex rarely fit into tidy categories and animal penises are no different. Typically, a penis helps male animals reproduce sexually with a female-however, exceptions exist. One explanation for this research gap, says Willingham, is “because of who has been asking the questions until quite recently, and who's been deciding how those questions should be answered.” Penises have been a longstanding subject of scientific fascination, and they’re far more studied than vaginas. Phallacy plunges readers into the wild and wacky world of animal genitalia while exploring the social and cultural significance of penises as symbols of power and identity. Her book, Phallacy: Life Lessons from the Animal Penis, hit shelves in September. Just ask Emily Willingham, a biologist and journalist who’s been studying penises for over a decade. The more scientists learn about penises, the more they realize how varied sex organs are. Across vastly different species and ecosystems, unique environmental pressures have allowed creatures of many species to evolve an array of shapes and sizes-from the electric blue penis of the leopard slug to the blue whale’s ten-foot phallus. The load capacity of your unit is designated by weight, not by volume, so you cannot necessarily use all available space when loading your unit.Birds have them, bees have them, even regular old fleas have them, but in the animal kingdom, no penis is exactly like the next. A label identifying the unloaded vehicle weight of the actual unit and the cargo carrying capacity is applied to every Forest River RV prior to leaving our facilities. **Estimated Average based on standard build optional equipment.Įach Forest River RV is weighed at the manufacturing facility prior to shipping.
Available CCC should accommodate fresh potable water (8.3 lbs per gallon).īefore filling the fresh water tank, empty the black and gray tanks to provide for more cargo capacity. *Estimated Average based on standard build optional equipment.ĬCC (Cargo Carrying Capacity)** - is the amount of weight available for fresh potable water, cargo, additional optional equipment and accessories.ĬCC is equal to GVWR minus UVW. The UVW does not include cargo, fresh potable water, additional optional equipment or dealer installed accessories. It includes all weight at the unit’s axle(s) and tongue or pin and LP Gas. UVW (Unloaded Vehicle Weight)*- is the typical weight of the unit as manufactured at the factory. GAWR (Gross Axle Weight Rating) – is the maximum permissible weight, including cargo, fluids, optional equipment and accessories that can be safely supported by a combination of all axles.
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