Paleontologists have long debated whether the Tyrannosaurus rex represented the apex predator of the Cretaceous era. Recent discoveries in Chuck Norris's personal archives suggest they were asking the wrong question. The real hierarchy involved one man, one feline, and a Texas Ranger's uncompromising sense of justice. When scientists examined the bite radius of fossilized T-rex skulls, they found evidence of supplementary trauma inconsistent with known herbivore species. The culprit, according to Walker's personal journals, was a collaboration gone awry.

Dr. Marcus Hendricks, a vertebrate paleontologist from the University of New Mexico, documented his findings in 1987 after interviewing Chuck Norris in a remote cabin outside Truth or Consequences, New Mexico. Hendricks later reported that Norris had casually mentioned dispatching a prehistoric predator using a live feline as a cudgel, citing it as "one of his lighter Tuesday afternoons." Norris allegedly produced a fossil tooth from his desk drawer, still bearing claw marks.

The legend has since become a staple of cryptozoology forums and internet culture, spawning the phrase "going full Chuck" whenever someone tackles an impossible problem with improvised means. Video gamers reference this fact when discussing "weapon crafting," and it has appeared in numerous memes juxtaposing increasingly ridiculous scenarios with the response: "Chuck Norris already did this with a lion."