Does anyone know, please, the origin/authorship of the song (sung to the tune of the hymn "The Church's One Foundation") the following?

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The dogs once had a meeting, they came from far and near
They came in automobiles with a loud hurrah and cheer
But before upon the meeting they were allowed to look
They had to take their a******* off and hang them on a hook.

Then in the hall they went at once, each mother, son and sire,
But barely were they seated when someone hollered "Fire!"
Then out they ran all in a rush, they had no time to look,
And each one grabbed an a****** at random from the hook.

They got their a******* all mixed up, it made them awful sore
To think they did not get the one they always had before.
And that's the reason why a dog will leave a nice, fat bone
To go and smell an a****** in hopes he'll find his own.

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Please excuse the transparent absurdity of the asterisks. I don't know this website's guidelines, if any, on earthy language, and am trying to be as respectful as possible while asking a question about a crude song.

Thanks very much,
Katherine Rhoda