Raining cats and dogs

[4] One possible explanation involves the drainage systems on buildings in 17th-century Europe, which were poor and may have disgorged their contents, including the corpses of any animals that had accumulated in them, during heavy showers.

This occurrence is described in Jonathan Swift's 1710 poem "Description of a City Shower":[5] Drowned puppies, stinking sprats, all drenched in mud, Dead cats and turnip-tops come tumbling down the flood.

However there is no evidence to support the theory that the expression was borrowed by English speakers.

[1] An online rumor largely circulated through email claimed that, in 16th-century Europe, animals could crawl into the thatch of peasant homes to seek shelter from the elements and would fall out during heavy rain.

[7][8] musholdhare brishṭi poṛchhe qīngpén dàyǔ kokispiruli tsvima vréchei kareklopódara musaldhār bārish doshaburi pemari shoqal baran pei mazhi fon dtok mai lʉʉm huu lʉʉm dtaa