The Tail of a Mouse ... and Billy

This morning at breakfast time Billy was sniffing and pawing at the piece of wood below the the garden room door [Billy's room although I'm not supposed to call it his room]
Suddenly out from underneath the piece of wood ran a mouse!!!!
Billy immediately ran after it pouncing on it and biting it, the mouse was squeaking like mad and it's little tail shaking around all over the place!
My brother immediately ran out of the house in his dressing gown and bare feet to hold Billy by the collar to let the poor mouse run away!
Although we couldn't particularly tell Billy off because he's a Terrier and it was his instinct.
That mouse definitely won't be coming back though!