The tiger appears to be hugging the old tree - possibly leaving her scent on the bark. Perhaps she is marking her territory or signalling her availability to any fertile male tigers in the region.
Of course we are all painfully aware that in ten or twenty years time it may prove impossible to record a similar image as the Siberian tiger is a severely endangered species. There are perhaps only five hundred Siberian tigers left in the wild and with each passing year their territory is reduced. Like polar bears, rhinos, blue whales, river dolphins, eagles, hedgehogs, koalas, pandas, pangolins, harvest mice and elephants the odds are stacked against the Siberian tiger.
Sergey Gorshkov's wonderful image looks rather like an oil painting. Perhaps in the future that is the only way we will get to see new pictures of Siberian tigers in the wild - as oil paintings, displayed on walls alongside pictures of unicorns, dragons and griffins.