I was told that in medieval times when the roofs were made of straw, the cats and dogs ,birds ect. slept in the roof straw to keep warm and dry. When it rained the straw became slippery and the dogs and cats + slide off the roof and into the house. Hence "it is raining cats and dogs."
I was told that in medieval times when the roofs were made of straw, the cats and dogs ,birds ect. slept in the roof straw to keep warm and dry. When it rained the straw became slippery and the dogs and cats + slide off the roof and into the house. Hence "it is raining cats and dogs."