A proverb meaning those who make the most noise or fuss often accomplish little; similar to "empty vessels make the most noise."
彼は会議でよく意見を言うが、実際には仕事をしない。まさに『鳴く猫は鼠を捕らぬ』だ。
He often speaks up in meetings but doesn't actually do the work. Truly, an example of 'the meowing cat does not catch the mouse.'
あの評論家は批判ばかりで解決案を出さない。鳴く猫は鼠を捕らぬ、という言葉が当てはまる。
That critic only criticizes and never offers solutions. The proverb 'empty vessels make the most noise' fits.