Why an Elephant head to lord Ganesha, Why not of other animals?

In Hinduism, Lord Ganesha has elephant head, he is the deity, who is worshiped first before any ceremony and any other gods and goddesses. We know the story why and how the head of Ganesha was chopped and replaced with an elephant head by his father, Lord Shiva. Why lord Shiva replaced the head of impertinent Ganesha with the head of an elephant, why not of other animals or head of any other human? No mythological story exist without any logic. What is the logic behind this head replacement?

The chopping of the head and replacing with the elephant head is the significance of the replacing your thought with the bigger one. Lord Ganesha could not recognize his father and fought with his father. It is the indication of ignoring the divinity. In order to make lord Ganesha a divine one, he replaced his head with bigger and intelligent one.

Again, why elephant head? For that, let us understand the brain of an elephant.  The brain of the elephant is the biggest brain among all living animals in comparison with their body. The hippo- campus, the part of the brain is for a long memory, Cerebral cortex is the part of the brain that enables problem solving ability.These parts are found in the brain of an elephant which absent in most of the other animals. Elephant has post-traumatic disorder, means, he cries on something wrong happens with him or with someone associated with him. They work cooperatively to accomplish the task. It shows his concern of the society and living in co-operation. His big ears are the symbol of his listening ability. His big ears help to hear something from far. At many occasions, he uses his body language to communicate the things.

Elephant creates arts by choosing different colors and elements. They can recognize twelve distinct tones of music. They have sense of empathy, altruism and justice. This is the only animal who performs the burial rituals and returning to visit graves like humans. They show concern for other species as well. Elephants safeguard human from injuries. He is one of the few species who can recognize his faces in the mirror. They are conscious, intelligent and emotional beings.
His trunk is the symbol of intelligence and sensitivity. Even a small ant entered into the trunk of the elephant can take his life away, it shows his sensitivity. His intelligence prevents insects entering into his body. The elephant, by using the strength of his body, makes the way for other animals in the dense forest, it means, he is a way maker for others. The small eyes of an elephant make the image of an object bigger than its original. It implies that he looks everyone big and ignore no one. With his small eyes, he can see the objects of far distance. It implies the vision.

In this way, the big head of elephant is the significance of big thought, emotion, intelligence, vision, listening ability, caring for others and wisdom. The wisdom is the most beautiful thing of all the other beauties. All other beauties fade away with time, but the wisdom is the timeless beauty. That is why, wisdom should be worshiped before any temporary things. This is the reason, lord Ganesha head was chopped and replaced with an elephant head and he is worshiped before any work.