Any 4 ply yarn can be used. For a fluffy effect use a strand of kid silk along with the 4ply
Length of mouse (excluding tail) is 1.5ins. If using a strand of kidsilk then the mouse will be slightly bigger.
the body is knitted using dpns and the ears are knitted flat.

I knitted the mouse to fit into the pocket of the Little Cotton Rabbit dungaree pattern.