Nope. Gold, Silver, and Crystal introduced the aspect of certain Pokemon available at only certain times of day. Growlithe is one that is only in the day
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you catch it at night
yes if you can find them
at night in sprout tower or in route east of Violet city.
On route 29, just after the first town, New Bark Town. You can only catch Noctowl at night though, that might be why you're having trouble.
First, you need to catch a Ghastly, which can be found in the sprout tower or caves at night. Evolve it into a Haunter and then trade it. At that it will evolve into Gengar which you need to have it traded back to you.