Raining cats n dogs ******N.B.

The first time i heard it, I had to think a lot to find the probable cause of the use of such an obscure expression inorder to depict the heavy rain. Even i had a short discussion with my friends about it.....But we didn't come to an conclusion. A lot of time has passed but still i don't know the reason behind its use But if its said to depict the intensity of the rain ( which i afraid is not true) then be should say its raining bulls and bears in mumbai ( Don't be mislead by its share market analogy bcoj there are only bulls there).... above 800mm of rainfall in a single day yaar its astronomic most part of the country do not get such amount in a whole season. Such an event may be a abberation for mumbai but not for india. India has always sufferred a lot with fluctuating and erratic monsoon. There is flood ina part of country at the same time when the other part is facing acute draught. But after all diversity is what india is known for.
Whatever may be the casuality but with such a monsoon around i again get an urge to know the reason behind the usage of the phrase raining cats and dogs.....So as usual i made a google search and come up a confusing situation. Actually there are many proported reasons for the usage of the above phrase. Some people's derivation is that cats are sayed to have sway over the weather ( its an old sailors myth). Feline meteorological magic, coupled with a symbolic association of storms with dogs, may be the genesis for the phrase. The other arguement is that on account of the notorious inefficiency of 17th-century sewage and drainage systems, the streets of European cities were often littered with debris and dead animals( mostly cats n dogs) after heavy rainstorms. They had to come from somewhere, right? There were other arguements too. But i got bored and stopped digging furthur.
Lets leave out rains... they are just for a time being and everything will be back to normal within a week or so..........but high rain in my region may bear me an advantage in form of a concession in power cut over next summer which has become a typical feature of an scorching indian summer especially in a power deficient state like MP.

Note: Censored ( Only for extremely pervert people who can endure reading anything) Its real crap plz avoid reading it and if u dare to read it again don't blame me for the after effects