Несколько английских устойчивых выражений, идиом, фразеологизмов с собаками

Black dog.

Let sleeping dogs lie - не буди лихо, пока оно тихо
Teach an old dog new tricks - переучивать на старости лет
Every dog has its day - будет и на нашей улице праздник
Underdog - аутсайдер, тёмная лошадка
Dog's breakfast/dinner - черт знает что
Raining cats and dogs - льёт как из ведра
Bark up the wrong tree - обвинять не того, смотреть не в ту сторону
Hair of the dog (that bit you) - опохмел
A dog and pony show - показуха
Gone to the dogs - пошло псу под хвост
Dog eat dog - пауки в банке, каждый сам за себя

https://www.oxfordlearnersdictionaries.com/definition/english/dog_1?q=dog
be raining cats and dogs
​(informal) to be raining heavily
a dog and pony show
​(North American English, informal, disapproving) an event that is planned only in order to impress people so that they will support or buy something
the dog and pony show of his visits to the war zone
a dog and pony show to sell the idea to investors
(a case of) dog eat dog
​a situation in business, politics, etc. where there is a lot of competition and people are willing to harm each other in order to succeed
I'm afraid in this line of work it's a case of dog eat dog.
We're operating in a dog-eat-dog world.
a dog in the manger
​a person who stops other people from enjoying something that the person cannot use or does not want themselves
и т.д. по ссылке

Doggy style

pet the pooch

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