They are spread all across the map no specific location all random
If you get a life, play real games or even get a job if (paper route even) you won't need to find them.
No
you have to beat the elite four then look in the grass and hope you find the legendary dogs
you dont find the legendary dogs in fire red. instead you get the legendary birds. they are zapados moltres and articuno
You mean entei raiku and suicune? Well look around the three routes around that city with kamino girls
the basement
you find the legendary dogs in tall grass!
You can find Lugia, the legendary dogs/ Suicune, Enti, and Raichu, and I think Ho-Ho
you find them roaming in the grass
it depend upon ur starter
yes if you can find them
You can find the legendary dogs at every route making it very difficult to find an easy way to track it down is have a friend trade you the dog that you will be catching you can figure that out by finding out what starter you chose at the beginning of the game. Raikou will appear if you chose Squirtle, Suicune will appear if you chose Charmander and Entei appears if you chose Bulbasaur. Once a friend gives you the dog your going to be capturing you can use the pokedex to find out exactly where it is however if you go there it will change its location so try to "trick it" into coming to the route that your on.