Lines to a Yorkshire Terrier

Lines 10-13 are used in Old Deuteronomy's speech in Act 1.

In a brown field stood a tree
And the tree was crookt and dry.
In a black sky, from a green cloud
Natural forces shriek'd aloud,
Screamed, rattled, muttered endlessly.
Little dog was safe and warm
Under a cretonne eiderdown,
Yet the field was cracked and brown
And the tree was cramped and dry.
Pollicle dogs and cats all must
Jellicle cats and dogs all must
Like undertakers, come to dust.
Here a little dog I pause
Heaving up my prior paws,
Pause, and sleep endlessly.