鶏口となるも牛後となる勿れ
Meanings
1
better to be the head of a small group than the tail of a large one; better to be a big fish in a small pond
Proverb advising that it is better to be a leader in a modest position than a follower in a grand one. The literal image is 'better to be a chicken's beak than a cow's rear end.'
It's better to be a leader in a small company than a rank-and-file employee in a big corporation. Truly, better to be the head of a chicken than the rear end of a cow.