It's been way too long since catgirl anime came out. How long ago was Samurai Pizza Cats?

Generally, the oldest catgirl anime that has a nice happy cat story is All Purpose Cultural Catgirl Nuku Nuku.

Lawson wrote fanfiction about Nuku Nuku. His best was about how the original female cat's brain was aging inside of its cybernetic housing. Just because the cyber/android body was human-like did not mean the organic cat brain had the same lifespan , , , As time passed the cat brain got old enough to become bidenized. The fanfic explored Nuku's last days with Ryonosuke and his wife. Nuku's cat brain had basically stopped thinking even though it was technically alive due to life support.

Nuku left behind a last message and program to be triggered when the cybernetic body detected the newborn infant that Ryonosuke and his wife brought home. Nuku's cybernetic body gently held the baby and the program presented the last heartfeld message from this stray cat who had been given a 2nd life in the cybernetic body. With that, the program shut off the cybernetic body , , , ,

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