Prince Siddhartha was kind to everyone. He was gentle with his horse and other animals. Because he was a prince his life was very easy, and he could have chosen to ignore the problems of others. But he felt sympathy for others. He knew that all creatures, including people, animals and all other living beings, like to be happy and don’t like suffering and pain.
Siddhartha always took care not to do anything harmful to any creature. He liked to help others. For example, one day the prince saw one of the town boys beating a snake with a stick. He immediately stopped the boy, and told him not to hurt the snake.
One day, Siddhartha was playing with his friends in the palace garden. One of the boys was his cousin, Prince Devadatta. While Siddhartha was gentle and kind, Devadatta was by nature cruel and liked to kill other creatures. While they were playing, Devadatta shot a swan with his bow and arrow. It was badly wounded. But Siddhartha took care of the swan until its wounds healed. When the swan was well again, he let it go free. Source: BuddhaNet