A Rodent In My Room

A rodent in my room,
Crawling all over the place.
One moment it's on the bed,
Soon it's on the terrace.

A rodent in my room,
Hiding in the wall.
It moves under the cover of shadow,
Into the wide, open hall.

A rodent in my room,
Making the queerest noise.
It squeaks in the evening,
Taunting with its constant shrill voice.

A rodent in my room,
Lying still and unmoving.
The bottle was tipped and open,
Keeping the arsenic flowing.