There's a Bone

There's a bone
in a cat's penis, or tiger's
and, indeed, the walrus has one too.

There's a bone
in a pig's snout, a figure
eight, maybe it's infinity though.

There's a bone,
the narwhal's spiral, seed of myths
as daft as unicorns would be.

And there's a bone,
in a stag's heart, so proving
that broken hearts are possible still.