let a sleeping dog lie

buy a dog and bark oneself

To do something that one has hired someone else to do.

buy to let

To purchase a property as in investment, and to let it out for rental instead of living in it

cat and dog life

An unhappy married life marked by arguments and disagreements.

dog and cat

A team comprising one male and one female, either working as associates or having one as the second-in-command to the other.

dog and pony show

Any presentation or display that is overly contrived or intricate, while lacking real substance.

dog around

To follow diligently.

dog in the hunt

Something that may lead to gain, depending on the outcome; a position for which to campaign or cheer.

dog in the manger

Someone who denies to others something that the denier cannot use.