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Guinness World Records certified a Michigan woman's pet chicken as the oldest in the world after the hen's age was confirmed to be at least 20 years and 304 days. Peanut belongs to Marsi Darwin, a retired librarian in Michigan. Her age was verified by Dr. Julia Parker, the veterinarian who first saw Peanut as a full-grown adult in 2003. Marsi said Peanut has several grandchildren and great-grandchildren living in her coop. Peanut almost didn't survive past her own hatching. "I ended up peeling it out of the egg. As the chirping grew fainter, I feared the chick would not survive. A pitifully wet, wadded-up mess sat in my hand. I wrapped it in a towel and carried it close to my heart as I set up a cage and mounted a heat lamp with one hand," she shared last year to The Sun-Times. Chickens normally live to be 5 to 10 years old.