I am working on some very smart things to say here. Really. Meanwhile, there's 
It emerged from behind the overflowing garbage bin at the street corner: a two-headed eight-legged mammalian apparition. It hobbled clumsily into the middle of the street: Evolution's artless rendering of two naked dogs copulating; Fluffy's underprevileged brother.
"Why are they joined at the hip?", the shopkeeper across the street wondered.
"Why can't the erection happen outside, like in humans. Why does his penis enlarge after entering?", the bitch had its own questions.
A kid came on an errand to the shop, saw the dogs and picked up a small concrete piece from the chipped pavement.
"It sucks to stand twisted like this", the dog tugged at his member with increasing desperation.
Two male dogs came by to sniff the apparition. The female's odor induced a massive hormonal surge in the males. They growled and bared their teeth, their brains howling with sexual rage from inside a biochemical cauldron.
The sperms furiously swam, following the chemical trail to the egg. They had very little time to attempt the Kamikaze manoeuvre. The penis plug that guarded the entrance from another fertilizing mob of sperms was losing strength.
A dog fight ensued. Natural Selection stood by to judge.
The boy threw the stone at the dogs and ran for cover.
Horny dogs in copulatory positions are a common sight in those parts of the world where dogs don't have private bedrooms. The sight is not remarkable. What's remarkable, however, is the reason why the dogs can't seperate easily after copulation.
Prose ejaculated after a reading of The Red Queen by Matt Ridley.
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