Answer 1

Both yes and no.
He's species, as PokéDex says, is Legendary.
But, if you mean legendary like eg. Mewtwo, then no.

Comments

It also saids that it is a Chinese Legendary on the Pokedex but it doesn't mean that it is Legendary any were else, so yes it is a Legendary at China and no Because it is not a Legendary to the entire World.

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um, no it is not a legendary pokemon cause if it was it could not be breeded.also itwould not have any evolution stages( it evolves from growlithe right?) and it would not be obdainable via any normal methods in the game