Literally "a newborn calf does not fear the tiger"; describes a young person who is bold and courageous because they lack experience or are not yet aware of life's dangers.

Literally "a newborn calf is not afraid of the tiger," used to describe the courage and fearlessness of young people who are bold because they lack experience or have no fear of danger

a newborn calf does not fear the tiger; young and inexperienced people are often more courageous or reckless because they do not yet know enough to be afraid