Why a Black Cat?

Black Cat, Onyx Feline
Unaware of your own rigor mortis
Is it you that brings the pain
Or do you travel in its wake?

Back arched high,
legs cramped straight,
A menacing pose, or
relentless torment?

Blacklight neon hairs
The protein about you fluoresces,
Rending yellows, aching blues,
Hung in space, frozen in time.
(Why is there no Crimson?)

Other debris, to broken to name.
All like dust in the tail of a comet.
Ebon Mouser, why is my eye drawn to you?
What secrets do you hold?