rain dogs and cats

call off the dogs

To ease up on after inflicting great punishment.

dog my cats

Used as a mild oath, or as an expression of astonishment

dogs bark, cats meow

Used to introduce something seen as inevitable or totally commonplace.

go to the dogs

To decline or deteriorate shockingly.

herd cats

To attempt to control the uncontrollable; to attempt to manage a great many unruly factors or people to a single end.

let sleeping dogs lie

To leave things as they are; especially, to avoid restarting or rekindling an old argument; to leave disagreements in the past.

make it rain

To bring prosperity or work to an enterprise by selling, inventing or other productive or successful activity.

Pleasure and pain

[Cockney slang]rain

Both a matter of pleasure for gardeners and pain for sufferers from rheumatism.