Visitor's actions lead to euthanization of baby bison at Yellowstone National Park.

A newborn bison calf was killed at Yellowstone National Park after a man "intentionally disturbed" the animal by lifting it from the river and onto land. Despite park rangers' attempts to reunite the calf with its herd, the animal was abandoned and posed a danger to cars and people on the road. The park requires visitors to remain at least 25 yards away from most wildlife, and at least 100 yards away from bears and wolves. The National Park Service has asked anyone with information about the incident to contact the Yellowstone National Park Tip Line.