There are 4 legendary Pokemon on Red, Yellow, and blue. Maltres, zapdos, articuno, and mewtwo.
No. They were made after Pokemon Yellow.
You can't. The legendary dogs didn't exist at the time yellow was released. Sorry.
mr.g
mewtwo,moltres,zapdos,articuno and mew
Mewtwo, Zapdos, Moltres, and Mew.
Mewtwo, a Pokemon born for fighting, is the strongest in Yellow. It's Pyschic, legendary, and a man-made copy of Mew.
you can catch as many legendary Pokemon but only once unless you have it on the computer
there are many legendary Pokemon in Pokemon heartgold, but the best is HO-OH
grovile
Of course, there are Moltres, Zapdos, Articuno and Mewtwo.
There are 6.
The amount of available catchable legendary pokemon is three: Kyogre, Latias, Rayquaza.