ReptiliaLCYellow AnacondaEunectes notaeusDietCarnivore and opportunistic ambush predatorWild lifespanOften estimated at 15–20 years in the wild and more than 20 years under expert care
MammaliaLCYellow BaboonPapio cynocephalusDietHighly flexible omnivore with a plant-heavy dietWild lifespanFemales may reach 27 years in the wild; exceptional captive animals can live longer
ActinopterygiiLCYellow TangZebrasoma flavescensDietPrimarily herbivorous reef grazerWild lifespanUp to roughly 41 years estimated in Hawaiian studies
MammaliaLCYellow-bellied MarmotMarmota flaviventrisDietPrimarily herbivorous grazer and browserWild lifespanCommonly several years; exceptional wild individuals can exceed 15 years
ReptiliaLCYellow-Bellied Sea SnakeHydrophis platurusDietCarnivoreWild lifespanNot well established in the wild
AvesENYellow-eyed PenguinMegadyptes antipodesDietMarine carnivore specializing in fish and cephalopodsWild lifespanAverage survival is much shorter, but some individuals live 20–25 years