He has an elephant’s physical features, such as the head, the ears, the tusks, and the trunk. But he also has some human physical features, such as hands and legs. His form represents ideas that teach us about god.

HEAD: To hold all the knowledge that is to be known. He has a head as large as that of an elephant.

EARS: Listening to the scriptures and other forms of knowledge is the first step to learning. Hence the large ears like that of an elephant.

Trunk: We use the knowledge we have gained to discriminate between right and wrong, good and bad. The elephant's trunk is used to lift heavy objects or a fine blade of grass. Our intellect should be made so efficient that we can solve great problems in our life and also come to understand and know God.

TUSKS: One tusk is broken and the other is whole. This is to show us that even though we must discriminate between good and evil, we must also outgrow pairs of opposites like heat and cold, respect and insult, honor and dishonor.

MOUSE: THE MOUSE REPRESENTS OUR DESIRE
Even a desire as small as a mouse can destroy us completely if it is not kept in our control. The mouse does not eat all the food placed before the Lord without His permission. Whenever the Lord decided to go any place to serve His devotees. He uses the mouse as His vehicle. Likewise, we should learn to use our desires for the benefit of others as our service to the community.

GANESHA IS SOMETIMES DEPICTED WITH FOUR HANDS
With one hand he holds a rope and pulls us towards Him. In His second hand He holds an axe which he uses to cut off our harmful desires. In his third hand He holds a modak (sweet rice ball) to reward us when we reach Him. With His fourth hand He blesses His devotees.