Meet The Gila Monster — The Lizard That Gave Us Ozempic

InnovationScienceMeet The Gila Monster — The Lizard That Gave Us OzempicByScott Travers,Contributor.Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world.Follow AuthorJun 03, 2026, 08:30am EDT--:-- / --:--This voice experience is generated by AI. Learn more.This voice experience is generated by AI. Learn more.The fact that the Gila monster slowly chews its venom into its targets might pale in comparison to how it might have inspired the birth of Ozempic.gettyWhen most people picture a venomous reptile, they picture a snake with its fangs folding forward and a lightning-fast strike. It’s a clean, almost clinical image where venom is used almost always as a precision instrument. The Gila monster (Heloderma suspectum), however, does not subscribe to that image.The only venomous lizard native to the United States doesn’t inject anything. It bites down and holds, working its jaw in a slow, deliberate chewing motion while venom seeps upward through grooved teeth and into the wound. The whole process is unhurried, nothing like the elegant hypodermic strike of a viper. And yet this lizard has carried its venom system virtually unchanged for at least 30 million years.Two explanations, not mutually exclusive, have emerged from the literature for why the Gila monster developed this approach rather than evolving the hollow fang of a rattlesnake. The first comes down to diet. H. suspectum feeds primarily on eggs, nestlings and the occasional small mammal — prey that is passive, often immobile and doesn’t require subduing quickly. When your food can’t run, the pressure to evolve a fast delivery system largely disappears. The second explanation, supported by morphological and behavioral evidence, is that the venom functions primarily as a deterrent against predators, not a predatory tool. A sustained, painful bite that pumps in toxin over time is arguably more effective as a warning than a quick...