No foul play involved as 'satellite evidence' shows Kuzya did not attack chickens across border.
Pioneering life-saving operation to be carried out this week, as bid made to find and shame the gunman.
Environmentalists rescued the male cub after its mother apparently died in unexplained circumstances.
Human eye surgeon takes part in operation to give cub the chance to go back to its natural habitat.
Big cat had preyed on domestic dogs in Russia and China, but will now be mated with older tigress Prima in Rostov.
New video footage shows Amur the tiger lashing at Timur the goat - but then jumping back as if scared of the animal's horns.
'Influential businessman' Evgeniy Romanov, 52, avoids jail, despite a host of other 'trophies'.
Incredible friendship between Amur tiger and goat cannot last, he predicts.
Brave Timur moved into the Siberian tiger's cage, and took over his bed.
Animal charity WWF Russia in plea for help to prevent repeat of 1980s winter crisis that killed 90% of species in the region.