Yellowstone Rejects Euthanasia for Bison in Viral Attack — Here's Why

WASHINGTON – The image circulating online captures a real question that has been raised in the wake of a dramatic viral video: should the bison that attacked a grandfather at Yellowstone National Park be euthanized? The park has answered with a firm no.

On July 10, 2026, a bull bison charged 65-year-old Carl Isom-McDaniel at the Bridge Bay Campground, tossing him approximately eight feet into the air . The video, captured by professional photographer Mike MacLeod, went viral, amassing tens of millions of views .

McDaniel suffered a broken femur in four places and underwent surgery, but survived . The bison, weighing up to 2,000 pounds, did not gore him further after the initial toss .

Why the Bison Wasn't Euthanized

The National Park Service (NPS) has a clear policy: it preserves natural processes and rarely intervenes in wildlife management unless human actions have caused a problem . In this case, the attack occurred during the bison mating season (the rut), when bull testosterone levels are heightened and the animals are more aggressive and unpredictable .

The NPS does not typically euthanize animals for acting on natural instincts, even when those instincts lead to human injury. The agency's management focuses on population control, disease (brucellosis) prevention, and supporting tribal hunting, not punishment .

The park advises visitors to remain at least 25 yards (23 meters) from bison. However, witnesses said McDaniel and his grandson were at a safe distance — over 100 yards — when the bison, already agitated from charging at other tourists, suddenly targeted them . The photographer, Mike MacLeod, stated the attack was not the visitor's fault .

The Context: Why Euthanasia is Rare

The recent debate echoes a 2023 incident where a bison calf was euthanized after a visitor picked it up, causing the herd to reject it . In that case, the NPS intervened because human interference had directly caused the animal to become a hazard. The calf began approaching cars and people, leading the park to euthanize it for visitor safety .

By contrast, the bison in the current incident was acting on natural aggressive behavior. Euthanizing the animal would not align with NPS policy, which prioritizes preserving natural processes and only intervening when human actions threaten the ecological balance or public safety in a directly preventable way .

Public Reaction

The public appears split. Some have expressed sympathy for the victim, while others have praised the bison for not killing McDaniel and argued it should not be punished for being a wild animal. The viral footage has also sparked widespread debate about visitor responsibility in national parks .