'Aggressive' animal surprised two hunters in daylight attack, mauling one to death.
Running for its life after its mother was killed, two-month-old bear is rescued after stumbling into officers.
New estimate puts number at 80, almost double some recent figures.
The bison - or buffalo - are under special protection from hunters amid rising concern over wolf attacks.
Human eye surgeon takes part in operation to give cub the chance to go back to its natural habitat.
Predators seek food in villages all around Siberia as climate expert warns of worse fires each year due to soaring rise in temperatures, 10C above average.
The zoo at Seversk - a city closed to outsiders without special permits - has unveiled its latest inhabitants, several brightly striped snakes.
No foul play involved as 'satellite evidence' shows Kuzya did not attack chickens across border.
Siberian 'suslik' needs human rescue from passing motorists on Olkhon island in Lake Baikal.
Move defies hunters who want to keep shooting the black bear.