The closest living relative to the T-Rex is the chicken. This may sound surprising, but birds are considered to be modern-day dinosaurs. Through genetic analysis, researchers have discovered that birds share many traits and genetic markers with their prehistoric ancestors, including the T-Rex. While chickens are not direct descendants of the T-Rex, they have evolved from the same group of theropod dinosaurs that gave rise to these massive beasts. The similarities between birds and dinosaurs allow us to uncover many fascinating aspects of these ancient creatures, and ultimately understand more about how life on Earth has evolved over time.