Why dogs sniff each other

The dogs once held a meeting, they came from near and far.
Some came by boats and some by planes, and others came by car.
Before each dog could register, his name upon the book,
He had to take his ass---- off, and hang it on a hook.

And as they sat there in a group, each mother's son and sire,
Some dirty, little, yellow cur, jumped up and hollered, "Fire!"
For as they rushed out in a group, they had no time to look,
And every dog at random, grabbed an ass---- off a hook.

And that is why, to this very day, a dog will leave a bone,
To smell another dog's ass----, in hopes he'll find his own.

Anonymous