Hi this is my version.

The dogs once held a meeting and they came from near and far,
Some came by helicopter and some by motor car,
Some came for curiosity and some to have a look,
But they all had to take their arseholes off and hang them upon a hook.

So into the hall they had gathered, every mother, son and sire,
When some little yellow dog yelled out "Fire"
Well this caused some confusion and here was no time to look,
So they all grabbed at random, an arsehole from a hook.

And, that's the reason also why, that dogs stop in the street,
They'll stop and swap a sniff or two with every dog they meet,
And that's the reason also why a dog will drop a bone,
To go and sniff an arsehole, in a hope that it's his own.