Schrödinger's dog

Schrödinger's dog can remain in its kennel
When Schrödinger's cat is put into a box.
So Schrödinger's dog contemplates the eternal,
While Schrödinger's cat comes to hate paradox.

Schrödinger's dog is still feasting on marrow
When Schrödinger's cat finds a cyanide phial,
And learns that its options are suddenly narrow.
But that's not why Schrödinger's dog wears a smile.

Schrödinger's dog can behave with persistence:
No need for its status to be re-defined.
So while Schrödinger's dog is assured of existence,
Poor Schrödinger's cat goes clean out of its mind.