I believe the main reason is that animals make stories much easier for children to grasp. Kids naturally relate to animals, and when you use them as characters, it's simple to show clear examples of good and bad behavior. Plus, animal stories tend to be less intimidating or scary than those with people, which makes it more comfortable for children to absorb the message.
我相信主要原因是動物讓故事更容易被兒童理解。孩子們天生容易與動物產生共鳴,當你用動物作為角色時,展示良好與不良行為的明確例子就變得簡單。此外,動物故事通常比以人類為主角的故事更不令人畏懼或害怕,這使得兒童更容易接受其中的訊息。