Why didn't Bai Anan speak in the leisurely animal world?

There are many reasons why Bai Anan doesn't talk in a leisure animal world. First of all, she may not talk, because she is avoiding the leopard. In the 23rd chapter of the novel, An-an Bai and Qing-qing Bai are chased by a leopard. In order to avoid the leopard, Bai Anan covered her mouth with Bai Qingqing and didn't speak. In addition, Bai Anan may choose to remain silent for other reasons, such as protecting himself or others and avoiding unnecessary troubles or dangers.