It will alert you when you have mice or termites.
An old Cat was in a fair way to kill all the Mice in the barn.
It grows rarely to a length of 4 ft.; it never bites, and feeds chiefly on frogs, toads and fishes, but mice are never taken.
They don't have mice in the Holiday Inn, do they?
The wild mouse, rat and rabbit are self-coloured, but the domesticated forms include various piebald patterns, such as spotted forms among mice, and the familiar black and white hooded and dorsal-striped pattern of some tame rats.