She'll fight like a tiger to protect her children.

她为了保护孩子，可以凶得像只老虎。

《牛津词典》

Tigers fight to death only when a tigress is defending her young, or when a tiger is guarding a tigress from the attentions of other males.

只有当母老虎在保护自己的幼崽时，或者当公虎在保护母老虎不受其他雄性动物的注意时，它们才会殊死搏斗。

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A brave soldier is a tiger in a fight.

勇敢的士兵在战斗中像只老虎。

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But whatever the cause, the effect is that the winners are very likely to fight like Tiger Moms to preserve their tax preferences even as they argue for lower rates.

FORBES: Corporate Tax Reform: The Winners And Losers Problem

The next Liberty-Movement candidate, therefore, must be prepared to give the run his all, fight like a tiger to the end but also be willing, if necessary, to accept a strategic defeat to position the movement to win the next time around.

FORBES: Defend Liberty, Draft Judge Napolitano For President In 2016