Dogs (and why they sniff each other's butts)

Once upon a long, long time ago, through desert sand and mountain snow,
Across the land was heard a greeting, all dogs required,
Come to a meeting!
They came from near, they came from far,
Some came by plane, some by car,
As they were admitted to the meeting place, to listen and to look,
Each was asked to leave his asshole, outside hanging from a hook,
After they were all seated,every dame and sire,
Some little yellow bitch in back jumped up and hollered, "FIRE"!
In all their haste and hurry,without a second look,
Each dog ran quickly out the door, and grabbed an asshole from a hook,
So that is why throughout all time, a dog will leave a bone,
To go and smell another's asshole,
He's looking for his own!