Chickens are dinosaurs but they are a dinosaur subgroup, closely related to dinosaurs.
They are theropod dinosaurs, more closely connected to Tyrannosaurus rex than Stegosaurus.
They share anatomical similarities with dinosaurs, including hollow bones and beaks.
They have more DNA than other living animals, indicating a common relationship with dinosaurs.
Evidence of fossils in early birds have been discovered that reveal they were birds descended from dinosaurs.
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