The (almost really) Complete Works of Lewis Carroll

We lived beneath the mat

Source: Alice’s Adventures under Ground (extracted, formatted)

We lived beneath the mat
Warm and snug and fat
But one woe, & that
Was the cat!

To our joys a clog,
In our eyes a fog,
On our hearts a log
Was the dog!

When the cat’s away,
Then the mice will play,
But, alas! one day,
(So they say)

Came the dog and cat,
Hunting for a rat,
Crushed the mice all flat,
Each one as he sat
Underneath the mat,
Warm, & snug, & fat—
Think of that!