A Tyrannosaurus rex's closest relative is a

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Recent research has shown that the closest living relative to a Tyrannosaurus rex is the chicken. This is because both dinosaurs (including T. rex) and birds belong to the same group of animals called the theropods, which share many anatomical features. The discovery of fossilized feathers on some theropod dinosaurs, including T. rex's close cousin, the Velociraptor, has provided further evidence of the close relationship between dinosaurs and birds.

A Tyrannosaurus Rex's Closest Relative Is a