yes you can get it in the first city after pallet town. It is in the grass near where you face your rival and go to the Pokemon league.
Yes you can it can be found in several areas such as the route west of Viridian City and the Central Area of the Safari Zone.
Yes, the female nidoran is blue and male nidoran is purple
Yes you can actually they are quite common.
Pokemon Red/Blue Nidoran (male) learns 'Double Kick' at level 43 Nidoran (female) learns 'Double Kick' at level 43 Pokemon Yellow Nidoran (male) learns 'Double Kick' at level 12 Nidoran (female) learns 'Double Kick' at level 12 Pokemon Silver/Gold/Crystal Nidoran (male) learns 'Double Kick' at level 12 Nidoran (female) learns 'Double Kick' at level 12 Pokemon Ruby/Sapphire/Emerald Nidoran (male) learns 'Double Kick' at level 12 Nidoran (female) learns 'Double Kick' at level 12 Pokemon Diamond/Pearl/Platinum Nidoran (male) learns 'Double Kick' at level 9 Nidoran (female) learns 'Double Kick' at level 9
It is impossible to catch a male or female nidoran in Pokemon Ruby. To get one you'd have to get it by trade.
Nidoran Female.
It's Nidoran
Both the female and male Nidoran can be found via Pokeradar on Route 201.
no, only the nidoran have genders.
Nidoran is #29 (female) and #32 (male) in the national pokedex, and it is a Poison type Pokemon.
Both Nidoran male and female are found in the grassy area on Route 22.
Nidoran Male and Female can be found in these places: The route west of viridian city and the safari zone.
Both male and female are on Route 4