Ganesha: Mooshak (Mouse)
The prime deity, Ganesha is said to have 8 incarnations. Of these, Bappa is seen mounted on a mouse in 5 of them. The lion, peacock and serpent form his vahanas in the remaining 3 incarnations. The mouse is generally considered destructive in nature. If not controlled at the right time, it can cause immense damage. Human mind also depicts the same and hence, Lord Ganesha who protects the mind from flowing in the negative space has the mouse as his vahana.