to pull a tooth from a tiger's mouth; a metaphor for daring the greatest danger or undertaking an extremely risky task

to narrowly escape death; to survive a major disaster or a life-threatening situation

literally a sheep falling into the tiger's mouth; a situation from which there is no escape; a hopeless trap

Literally "a sheep enters a tiger's mouth"; used to describe someone placing themselves in a situation of extreme danger where escape is impossible or certain death awaits