bark up the wrong tree

být na špatné adrese
"If he thinks he can fool me, he is barking up the wrong tree." (Jestli si myslí, že mě může ošálit, tak je na špatné adrese.)

one's bark is worse than their bite

štěká, ale nekouše
"Don't let her frighten you, her bark is worse than her bite." (Nenech se od ní vystrašit. Ona štěká, ale nekouše.)