If you’re a fan of the film Jurassic Park, you may remember the Dilophosaurus, which was portrayed as a golden retriever-sized creature, with a threatening frill around its neck and venomous spit capable of blinding its prey. But what was Dilophosaurus really like? Paleontologists Matthew Brown and Adam Marsh reveal what’s been learned in the decades since Dilophosaurus made its film debut and reconstruct this dinosaur in remarkable detail—including its appearance and behavior, how it evolved, and the world it inhabited. Sometimes, reality can be much more frightening than fiction.