To teach the dog to bark
Учить собаку лаять (т. е. ломиться в открытые ворота).
Ученого учить - только портить. Рыбу плавать не учат. Не учи плавать щуку, щука знает свою науку.
Другие пословицы:
- Love me, love my dog
- You cannot teach old dogs new tricks
- There is more than one way to kill a cat
- Better be the head of a dog than the tail of a lion
- Dumb dogs are dangerous
- A cat in gloves catches no mice
- The moon does not heed the barking of dogs
- Beware of a silent dog and still water
- The dogs bark, but the caravan goes on
- Dogs that put up many hares kill none
- The cat shuts its eyes when stealing cream
- To call off the dogs
- Every dog has his day
- Let sleeping dogs lie
- When the cat is away, the mice will play