Peanuts characters birthdays

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The birthdays and ages of the characters in Peanuts have been kept mostly anonymous by Charles Schulz, but sometimes clues would slip.

The Peanuts characters generally do not age, or age very slowly, except in the case of infant characters who catch up to the rest of the cast, then stop. Rerun is unique in that he stopped aging in kindergarten. More typically, Linus was born in the first couple of years of the strip's run. He ages from infancy to right around Charlie Brown's age over the course of the first ten years, during which we see him learn to walk and talk with the help of Lucy and Charlie Brown. Linus then stops aging when he is about a year or so younger than Charlie Brown. Charlie Brown himself was four when the strip began, and gradually aged over the next two decades until he settled in as an eight year old (after which he is consistently referred to as eight when any age is given).