At Yellowstone National Park, officials are used to issuing warnings to the public each time a visitor is injured by a bison. The animals hurt more tourists than any other animal at the park.

But this time, it was a newborn bison calf that suffered.

On Monday, officials said that the calf had been euthanized a week after visitors picked the animal up and put it in the back of an S.U.V. The calf was killed because it was later rejected by its herd and appeared to have been habituated to humans, Morgan Warthin of the National Park Service wrote in a statement.

“The bison calf was later euthanized because it was abandoned and causing a dangerous situation by continually approaching people and cars along the roadway,” Ms. Warthin wrote.