you can find the nidoran male and frmale in the safari zone. You can also find the male nidoran in route 21.
in my butt
in professer rowans breifcase
go to route 201 and use the pokeradar!! nidoran male is harder to find!!
You don't, kyogre is in the cave of origin
There is a map guide that shows you where you can catch everyone.
go on map 6 to find shinydeoxy even you find a regiagas
You need to get a nidoran female first which only firered and leafgreen can get trade one to emerald then train it to level 16 to get nidorina use a moon stone on it to evolve it again to nidoqueen.
Regigigas is at the snow point temple but you have to have regirock regice and registeel
Nidoran Male and Female can be found in these places: The route west of viridian city and the safari zone.
we should go on map8 to get articuno in pokemonlake
You can find Nidoran in route 3 (sometimes even Nidorino\Nidorina) and the Safari Zone in Fuchia city.