Interesting question. I give that title to Pokemon, although I really couldn't distinguish that as an anime. The first one that I watched that I knew was an anime would likely have to be InuYasha.
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Muses are red Cinderellas are blue FAITODAYO GANBARIMASU
hmm, that's a toughfy. My parents had me watching anime ever since I was little, so its hard to say. I'm thinking it was either Pokemon, Sailor Moon, or a Kiki's Delivery Service