This time a guy saw a bison calf get separated from its mother and tried to intervene. The hard rejected it when park rangers tried to reunite it, and it had to be euthanized.
https://www.npr.org/2023/05/24/1177857710/bison-calf-yellowstone-man
https://www.npr.org/2023/05/24/1177857710/bison-calf-yellowstone-man