In 1900, Alphonse Elric was born in a small town called Resembool. His childhood was a fairly normal one--aside from practicing alchemy with his older brother, Edward. Despite the absence of their father, they brothers grew up happily with their mother and close friend, Winry.
His first few hours, he found a sick kitten who had most likely wandered in from his world. Talking to it, petting it, and trying to keep it out of the acid rain, he soon realized that the cat was in desperate condition. Ignoring his own safety, he ran towards the nearest shelter where he came upon Harry Mason. But by then, it was too late for the little kitten.