House Mouse

I think there is a mouse
Living in my house
The little unwelcome guest
Has caused some unrest
The way my cats stare
At the door under the stairs
Their noses sniff around the door
They press their faces to the floor
To peer through the gaps
Where wood has started to crack
Sometimes they like to tap
Or even worse they scratch
If I dare to go inside
They race in to surprise
And catch the little mouse
That's unwelcome in our house
When they come out empty pawed
Sad little pout, dusty, I'm appalled
At their lack
Of catch
On goes the mouse
Never seen or caught in my house
Instead I have to dirty cats